Finding the Fourth Proportional to 2,317.76, 3,474.16 and 1,587.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,317.76 : 3,474.16 = 1,587.12 : x
2. Step 2: Convert to fraction form
   2,317.76/3,474.16 = 1,587.12/x
3. Step 3: Cross multiply
   2,317.76x = 3,474.16 × 1,587.12
4. Step 4: Simplify right side
   2,317.76x = 5,513,908.82
5. Step 5: Solve for x
   x = 5,513,908.82/2,317.76
6. Step 6: Final answer
   x = 2,378.98