Finding the Fourth Proportional to 2,664.08, 3,994.68 and 1,124.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,664.08 : 3,994.68 = 1,124.72 : x
2. Step 2: Convert to fraction form
   2,664.08/3,994.68 = 1,124.72/x
3. Step 3: Cross multiply
   2,664.08x = 3,994.68 × 1,124.72
4. Step 4: Simplify right side
   2,664.08x = 4,492,896.49
5. Step 5: Solve for x
   x = 4,492,896.49/2,664.08
6. Step 6: Final answer
   x = 1,686.47