Finding the Fourth Proportional to 3,100.66, 4,649.91 and 1,251.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,100.66 : 4,649.91 = 1,251.30 : x
2. Step 2: Convert to fraction form
   3,100.66/4,649.91 = 1,251.30/x
3. Step 3: Cross multiply
   3,100.66x = 4,649.91 × 1,251.30
4. Step 4: Simplify right side
   3,100.66x = 5,818,432.38
5. Step 5: Solve for x
   x = 5,818,432.38/3,100.66
6. Step 6: Final answer
   x = 1,876.51