Finding the Fourth Proportional to 722,569.55, 997,146 and 400,300.52

Step by Step Solution

1. Step 1: Write the proportion equation
   722,569.55 : 997,146 = 400,300.52 : x
2. Step 2: Convert to fraction form
   722,569.55/997,146 = 400,300.52/x
3. Step 3: Cross multiply
   722,569.55x = 997,146 × 400,300.52
4. Step 4: Simplify right side
   722,569.55x = 399,158,064,808.79
5. Step 5: Solve for x
   x = 399,158,064,808.79/722,569.55
6. Step 6: Final answer
   x = 552,414.73