Finding the Fourth Proportional to 1,429.04, 2,140.27 and 1,379.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.04 : 2,140.27 = 1,379.80 : x
2. Step 2: Convert to fraction form
   1,429.04/2,140.27 = 1,379.80/x
3. Step 3: Cross multiply
   1,429.04x = 2,140.27 × 1,379.80
4. Step 4: Simplify right side
   1,429.04x = 2,953,144.55
5. Step 5: Solve for x
   x = 2,953,144.55/1,429.04
6. Step 6: Final answer
   x = 2,066.52