Finding the Fourth Proportional to 1,774.73, 2,662.25 and 542.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,774.73 : 2,662.25 = 542.15 : x
2. Step 2: Convert to fraction form
   1,774.73/2,662.25 = 542.15/x
3. Step 3: Cross multiply
   1,774.73x = 2,662.25 × 542.15
4. Step 4: Simplify right side
   1,774.73x = 1,443,322.82
5. Step 5: Solve for x
   x = 1,443,322.82/1,774.73
6. Step 6: Final answer
   x = 813.27