Finding the Fourth Proportional to 3,987.50, 5,502.32 and 2,308.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987.50 : 5,502.32 = 2,308.76 : x
2. Step 2: Convert to fraction form
   3,987.50/5,502.32 = 2,308.76/x
3. Step 3: Cross multiply
   3,987.50x = 5,502.32 × 2,308.76
4. Step 4: Simplify right side
   3,987.50x = 12,703,536.32
5. Step 5: Solve for x
   x = 12,703,536.32/3,987.50
6. Step 6: Final answer
   x = 3,185.84