Finding the Fourth Proportional to 2,663.83, 3,990.88 and 1,487.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663.83 : 3,990.88 = 1,487.71 : x
2. Step 2: Convert to fraction form
   2,663.83/3,990.88 = 1,487.71/x
3. Step 3: Cross multiply
   2,663.83x = 3,990.88 × 1,487.71
4. Step 4: Simplify right side
   2,663.83x = 5,937,272.08
5. Step 5: Solve for x
   x = 5,937,272.08/2,663.83
6. Step 6: Final answer
   x = 2,228.85