Finding the Fourth Proportional to 1,030,123.56, 1,545,406.78 and 347,078.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,030,123.56 : 1,545,406.78 = 347,078.31 : x
2. Step 2: Convert to fraction form
   1,030,123.56/1,545,406.78 = 347,078.31/x
3. Step 3: Cross multiply
   1,030,123.56x = 1,545,406.78 × 347,078.31
4. Step 4: Simplify right side
   1,030,123.56x = 536,377,173,464.94
5. Step 5: Solve for x
   x = 536,377,173,464.94/1,030,123.56
6. Step 6: Final answer
   x = 520,692.07