Finding the Fourth Proportional to 1,014.55, 1,400.15 and 572.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,014.55 : 1,400.15 = 572.56 : x
2. Step 2: Convert to fraction form
   1,014.55/1,400.15 = 572.56/x
3. Step 3: Cross multiply
   1,014.55x = 1,400.15 × 572.56
4. Step 4: Simplify right side
   1,014.55x = 801,669.88
5. Step 5: Solve for x
   x = 801,669.88/1,014.55
6. Step 6: Final answer
   x = 790.17