Finding the Fourth Proportional to 2,080.32, 2,869.58 and 1,240.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.32 : 2,869.58 = 1,240.47 : x
2. Step 2: Convert to fraction form
   2,080.32/2,869.58 = 1,240.47/x
3. Step 3: Cross multiply
   2,080.32x = 2,869.58 × 1,240.47
4. Step 4: Simplify right side
   2,080.32x = 3,559,627.90
5. Step 5: Solve for x
   x = 3,559,627.90/2,080.32
6. Step 6: Final answer
   x = 1,711.10