Finding the Fourth Proportional to 2,649.81, 3,656.32 and 1,587.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,649.81 : 3,656.32 = 1,587.31 : x
2. Step 2: Convert to fraction form
   2,649.81/3,656.32 = 1,587.31/x
3. Step 3: Cross multiply
   2,649.81x = 3,656.32 × 1,587.31
4. Step 4: Simplify right side
   2,649.81x = 5,803,713.30
5. Step 5: Solve for x
   x = 5,803,713.30/2,649.81
6. Step 6: Final answer
   x = 2,190.24