Finding the Fourth Proportional to 1,432.83, 1,977.36 and 928.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.83 : 1,977.36 = 928.79 : x
2. Step 2: Convert to fraction form
   1,432.83/1,977.36 = 928.79/x
3. Step 3: Cross multiply
   1,432.83x = 1,977.36 × 928.79
4. Step 4: Simplify right side
   1,432.83x = 1,836,551.15
5. Step 5: Solve for x
   x = 1,836,551.15/1,432.83
6. Step 6: Final answer
   x = 1,281.77