Finding the Fourth Proportional to 3,340.56, 5,010.69 and 875.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,340.56 : 5,010.69 = 875.40 : x
2. Step 2: Convert to fraction form
   3,340.56/5,010.69 = 875.40/x
3. Step 3: Cross multiply
   3,340.56x = 5,010.69 × 875.40
4. Step 4: Simplify right side
   3,340.56x = 4,386,358.03
5. Step 5: Solve for x
   x = 4,386,358.03/3,340.56
6. Step 6: Final answer
   x = 1,313.06