Finding the Fourth Proportional to 745,665.12, 1,116,413.56 and 402,880.48

Step by Step Solution

1. Step 1: Write the proportion equation
   745,665.12 : 1,116,413.56 = 402,880.48 : x
2. Step 2: Convert to fraction form
   745,665.12/1,116,413.56 = 402,880.48/x
3. Step 3: Cross multiply
   745,665.12x = 1,116,413.56 × 402,880.48
4. Step 4: Simplify right side
   745,665.12x = 449,781,230,931.31
5. Step 5: Solve for x
   x = 449,781,230,931.31/745,665.12
6. Step 6: Final answer
   x = 603,194.68