Finding the Fourth Proportional to 1,432.20, 1,975.86 and 842.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.20 : 1,975.86 = 842.52 : x
2. Step 2: Convert to fraction form
   1,432.20/1,975.86 = 842.52/x
3. Step 3: Cross multiply
   1,432.20x = 1,975.86 × 842.52
4. Step 4: Simplify right side
   1,432.20x = 1,664,701.57
5. Step 5: Solve for x
   x = 1,664,701.57/1,432.20
6. Step 6: Final answer
   x = 1,162.34