Finding the Fourth Proportional to 897,445.50, 1,345,413.21 and 417,429.50

Step by Step Solution

1. Step 1: Write the proportion equation
   897,445.50 : 1,345,413.21 = 417,429.50 : x
2. Step 2: Convert to fraction form
   897,445.50/1,345,413.21 = 417,429.50/x
3. Step 3: Cross multiply
   897,445.50x = 1,345,413.21 × 417,429.50
4. Step 4: Simplify right side
   897,445.50x = 561,615,156,816.63
5. Step 5: Solve for x
   x = 561,615,156,816.63/897,445.50
6. Step 6: Final answer
   x = 625,793.05