Finding the Fourth Proportional to 3,100.66, 4,650.71 and 1,126.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,100.66 : 4,650.71 = 1,126.30 : x
2. Step 2: Convert to fraction form
   3,100.66/4,650.71 = 1,126.30/x
3. Step 3: Cross multiply
   3,100.66x = 4,650.71 × 1,126.30
4. Step 4: Simplify right side
   3,100.66x = 5,238,116.12
5. Step 5: Solve for x
   x = 5,238,116.12/3,100.66
6. Step 6: Final answer
   x = 1,689.36