Finding the Fourth Proportional to 1,693,123.18, 2,539,023.20 and 613,379.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,693,123.18 : 2,539,023.20 = 613,379.42 : x
2. Step 2: Convert to fraction form
   1,693,123.18/2,539,023.20 = 613,379.42/x
3. Step 3: Cross multiply
   1,693,123.18x = 2,539,023.20 × 613,379.42
4. Step 4: Simplify right side
   1,693,123.18x = 1,557,384,577,782.54
5. Step 5: Solve for x
   x = 1,557,384,577,782.54/1,693,123.18
6. Step 6: Final answer
   x = 919,829.46