Finding the Fourth Proportional to 3,100.71, 4,278.24 and 1,756.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,100.71 : 4,278.24 = 1,756.35 : x
2. Step 2: Convert to fraction form
   3,100.71/4,278.24 = 1,756.35/x
3. Step 3: Cross multiply
   3,100.71x = 4,278.24 × 1,756.35
4. Step 4: Simplify right side
   3,100.71x = 7,514,086.82
5. Step 5: Solve for x
   x = 7,514,086.82/3,100.71
6. Step 6: Final answer
   x = 2,423.34