Finding the Fourth Proportional to 1,429.74, 2,142.57 and 844.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.74 : 2,142.57 = 844.86 : x
2. Step 2: Convert to fraction form
   1,429.74/2,142.57 = 844.86/x
3. Step 3: Cross multiply
   1,429.74x = 2,142.57 × 844.86
4. Step 4: Simplify right side
   1,429.74x = 1,810,171.69
5. Step 5: Solve for x
   x = 1,810,171.69/1,429.74
6. Step 6: Final answer
   x = 1,266.08