Finding the Fourth Proportional to 3,603.72, 4,972.54 and 2,031.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,603.72 : 4,972.54 = 2,031.78 : x
2. Step 2: Convert to fraction form
   3,603.72/4,972.54 = 2,031.78/x
3. Step 3: Cross multiply
   3,603.72x = 4,972.54 × 2,031.78
4. Step 4: Simplify right side
   3,603.72x = 10,103,107.32
5. Step 5: Solve for x
   x = 10,103,107.32/3,603.72
6. Step 6: Final answer
   x = 2,803.52