Finding the Fourth Proportional to 1,000.24, 1,380.72 and 651.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,000.24 : 1,380.72 = 651.52 : x
2. Step 2: Convert to fraction form
   1,000.24/1,380.72 = 651.52/x
3. Step 3: Cross multiply
   1,000.24x = 1,380.72 × 651.52
4. Step 4: Simplify right side
   1,000.24x = 899,566.69
5. Step 5: Solve for x
   x = 899,566.69/1,000.24
6. Step 6: Final answer
   x = 899.35