Finding the Fourth Proportional to 2,103.32, 2,902.86 and 1,515.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.32 : 2,902.86 = 1,515.80 : x
2. Step 2: Convert to fraction form
   2,103.32/2,902.86 = 1,515.80/x
3. Step 3: Cross multiply
   2,103.32x = 2,902.86 × 1,515.80
4. Step 4: Simplify right side
   2,103.32x = 4,400,155.19
5. Step 5: Solve for x
   x = 4,400,155.19/2,103.32
6. Step 6: Final answer
   x = 2,092.00