Finding the Fourth Proportional to 740,402.31, 1,109,123.60 and 340,495.05

Step by Step Solution

1. Step 1: Write the proportion equation
   740,402.31 : 1,109,123.60 = 340,495.05 : x
2. Step 2: Convert to fraction form
   740,402.31/1,109,123.60 = 340,495.05/x
3. Step 3: Cross multiply
   740,402.31x = 1,109,123.60 × 340,495.05
4. Step 4: Simplify right side
   740,402.31x = 377,651,093,935.71
5. Step 5: Solve for x
   x = 377,651,093,935.71/740,402.31
6. Step 6: Final answer
   x = 510,062.01