Finding the Fourth Proportional to 2,124.34, 3,184.96 and 1,429.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.34 : 3,184.96 = 1,429.28 : x
2. Step 2: Convert to fraction form
   2,124.34/3,184.96 = 1,429.28/x
3. Step 3: Cross multiply
   2,124.34x = 3,184.96 × 1,429.28
4. Step 4: Simplify right side
   2,124.34x = 4,552,199.63
5. Step 5: Solve for x
   x = 4,552,199.63/2,124.34
6. Step 6: Final answer
   x = 2,142.88