Finding the Fourth Proportional to 2,178.32, 3,264.52 and 1,587.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178.32 : 3,264.52 = 1,587.32 : x
2. Step 2: Convert to fraction form
   2,178.32/3,264.52 = 1,587.32/x
3. Step 3: Cross multiply
   2,178.32x = 3,264.52 × 1,587.32
4. Step 4: Simplify right side
   2,178.32x = 5,181,837.89
5. Step 5: Solve for x
   x = 5,181,837.89/2,178.32
6. Step 6: Final answer
   x = 2,378.82