Finding the Fourth Proportional to 2,124.12, 2,931.54 and 1,284.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.12 : 2,931.54 = 1,284.72 : x
2. Step 2: Convert to fraction form
   2,124.12/2,931.54 = 1,284.72/x
3. Step 3: Cross multiply
   2,124.12x = 2,931.54 × 1,284.72
4. Step 4: Simplify right side
   2,124.12x = 3,766,208.07
5. Step 5: Solve for x
   x = 3,766,208.07/2,124.12
6. Step 6: Final answer
   x = 1,773.07