Finding the Fourth Proportional to 1,429.38, 2,140.86 and 1,241.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.38 : 2,140.86 = 1,241.88 : x
2. Step 2: Convert to fraction form
   1,429.38/2,140.86 = 1,241.88/x
3. Step 3: Cross multiply
   1,429.38x = 2,140.86 × 1,241.88
4. Step 4: Simplify right side
   1,429.38x = 2,658,691.22
5. Step 5: Solve for x
   x = 2,658,691.22/1,429.38
6. Step 6: Final answer
   x = 1,860.03