Finding the Fourth Proportional to 1,150.81, 1,587.94 and 653.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.81 : 1,587.94 = 653.47 : x
2. Step 2: Convert to fraction form
   1,150.81/1,587.94 = 653.47/x
3. Step 3: Cross multiply
   1,150.81x = 1,587.94 × 653.47
4. Step 4: Simplify right side
   1,150.81x = 1,037,665.55
5. Step 5: Solve for x
   x = 1,037,665.55/1,150.81
6. Step 6: Final answer
   x = 901.68