Finding the Fourth Proportional to 2,770.52, 4,156.23 and 921.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,770.52 : 4,156.23 = 921.32 : x
2. Step 2: Convert to fraction form
   2,770.52/4,156.23 = 921.32/x
3. Step 3: Cross multiply
   2,770.52x = 4,156.23 × 921.32
4. Step 4: Simplify right side
   2,770.52x = 3,829,217.82
5. Step 5: Solve for x
   x = 3,829,217.82/2,770.52
6. Step 6: Final answer
   x = 1,382.13