Finding the Fourth Proportional to 1,002.50, 1,383.60 and 653.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.50 : 1,383.60 = 653.93 : x
2. Step 2: Convert to fraction form
   1,002.50/1,383.60 = 653.93/x
3. Step 3: Cross multiply
   1,002.50x = 1,383.60 × 653.93
4. Step 4: Simplify right side
   1,002.50x = 904,777.55
5. Step 5: Solve for x
   x = 904,777.55/1,002.50
6. Step 6: Final answer
   x = 902.52