Finding the Fourth Proportional to 2,126.31, 2,934.09 and 1,329.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,126.31 : 2,934.09 = 1,329.47 : x
2. Step 2: Convert to fraction form
   2,126.31/2,934.09 = 1,329.47/x
3. Step 3: Cross multiply
   2,126.31x = 2,934.09 × 1,329.47
4. Step 4: Simplify right side
   2,126.31x = 3,900,784.63
5. Step 5: Solve for x
   x = 3,900,784.63/2,126.31
6. Step 6: Final answer
   x = 1,834.53