Finding the Fourth Proportional to 1,927.56, 2,892.72 and 773.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,927.56 : 2,892.72 = 773.28 : x
2. Step 2: Convert to fraction form
   1,927.56/2,892.72 = 773.28/x
3. Step 3: Cross multiply
   1,927.56x = 2,892.72 × 773.28
4. Step 4: Simplify right side
   1,927.56x = 2,236,882.52
5. Step 5: Solve for x
   x = 2,236,882.52/1,927.56
6. Step 6: Final answer
   x = 1,160.47