Finding the Fourth Proportional to 2,421.90, 3,633.57 and 1,124.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,421.90 : 3,633.57 = 1,124.10 : x
2. Step 2: Convert to fraction form
   2,421.90/3,633.57 = 1,124.10/x
3. Step 3: Cross multiply
   2,421.90x = 3,633.57 × 1,124.10
4. Step 4: Simplify right side
   2,421.90x = 4,084,496.04
5. Step 5: Solve for x
   x = 4,084,496.04/2,421.90
6. Step 6: Final answer
   x = 1,686.48