Finding the Fourth Proportional to 2,515.52, 3,471.30 and 1,396.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,515.52 : 3,471.30 = 1,396.50 : x
2. Step 2: Convert to fraction form
   2,515.52/3,471.30 = 1,396.50/x
3. Step 3: Cross multiply
   2,515.52x = 3,471.30 × 1,396.50
4. Step 4: Simplify right side
   2,515.52x = 4,847,670.45
5. Step 5: Solve for x
   x = 4,847,670.45/2,515.52
6. Step 6: Final answer
   x = 1,927.11