Finding the Fourth Proportional to 2,402.76, 3,603.87 and 671.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.76 : 3,603.87 = 671.52 : x
2. Step 2: Convert to fraction form
   2,402.76/3,603.87 = 671.52/x
3. Step 3: Cross multiply
   2,402.76x = 3,603.87 × 671.52
4. Step 4: Simplify right side
   2,402.76x = 2,420,070.78
5. Step 5: Solve for x
   x = 2,420,070.78/2,402.76
6. Step 6: Final answer
   x = 1,007.20