Finding the Fourth Proportional to 1,422.52, 2,134.47 and 874.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.52 : 2,134.47 = 874.42 : x
2. Step 2: Convert to fraction form
   1,422.52/2,134.47 = 874.42/x
3. Step 3: Cross multiply
   1,422.52x = 2,134.47 × 874.42
4. Step 4: Simplify right side
   1,422.52x = 1,866,423.26
5. Step 5: Solve for x
   x = 1,866,423.26/1,422.52
6. Step 6: Final answer
   x = 1,312.05