Finding the Fourth Proportional to 2,129.34, 2,935.80 and 1,429.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129.34 : 2,935.80 = 1,429.50 : x
2. Step 2: Convert to fraction form
   2,129.34/2,935.80 = 1,429.50/x
3. Step 3: Cross multiply
   2,129.34x = 2,935.80 × 1,429.50
4. Step 4: Simplify right side
   2,129.34x = 4,196,726.10
5. Step 5: Solve for x
   x = 4,196,726.10/2,129.34
6. Step 6: Final answer
   x = 1,970.90