Finding the Fourth Proportional to 1,562.27, 2,342.52 and 521.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.27 : 2,342.52 = 521.72 : x
2. Step 2: Convert to fraction form
   1,562.27/2,342.52 = 521.72/x
3. Step 3: Cross multiply
   1,562.27x = 2,342.52 × 521.72
4. Step 4: Simplify right side
   1,562.27x = 1,222,136.61
5. Step 5: Solve for x
   x = 1,222,136.61/1,562.27
6. Step 6: Final answer
   x = 782.29