Finding the Fourth Proportional to 1,429.48, 2,139.36 and 1,106.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.48 : 2,139.36 = 1,106.29 : x
2. Step 2: Convert to fraction form
   1,429.48/2,139.36 = 1,106.29/x
3. Step 3: Cross multiply
   1,429.48x = 2,139.36 × 1,106.29
4. Step 4: Simplify right side
   1,429.48x = 2,366,752.57
5. Step 5: Solve for x
   x = 2,366,752.57/1,429.48
6. Step 6: Final answer
   x = 1,655.67