Finding the Fourth Proportional to 1,123,683.07, 1,685,540.17 and 365,528.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,683.07 : 1,685,540.17 = 365,528.50 : x
2. Step 2: Convert to fraction form
   1,123,683.07/1,685,540.17 = 365,528.50/x
3. Step 3: Cross multiply
   1,123,683.07x = 1,685,540.17 × 365,528.50
4. Step 4: Simplify right side
   1,123,683.07x = 616,112,970,029.85
5. Step 5: Solve for x
   x = 616,112,970,029.85/1,123,683.07
6. Step 6: Final answer
   x = 548,297.82