Finding the Fourth Proportional to 2,515.32, 3,470.58 and 1,521.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,515.32 : 3,470.58 = 1,521.18 : x
2. Step 2: Convert to fraction form
   2,515.32/3,470.58 = 1,521.18/x
3. Step 3: Cross multiply
   2,515.32x = 3,470.58 × 1,521.18
4. Step 4: Simplify right side
   2,515.32x = 5,279,376.88
5. Step 5: Solve for x
   x = 5,279,376.88/2,515.32
6. Step 6: Final answer
   x = 2,098.89