Finding the Fourth Proportional to 1,238,829,893.39, 1,709,630,359.83 and 674,287,488.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238,829,893.39 : 1,709,630,359.83 = 674,287,488.42 : x
2. Step 2: Convert to fraction form
   1,238,829,893.39/1,709,630,359.83 = 674,287,488.42/x
3. Step 3: Cross multiply
   1,238,829,893.39x = 1,709,630,359.83 × 674,287,488.42
4. Step 4: Simplify right side
   1,238,829,893.39x = 1,152,782,361,456,351,488
5. Step 5: Solve for x
   x = 1,152,782,361,456,351,488/1,238,829,893.39
6. Step 6: Final answer
   x = 930,541,285.46