Finding the Fourth Proportional to 1,053.36, 1,452.86 and 773.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.36 : 1,452.86 = 773.50 : x
2. Step 2: Convert to fraction form
   1,053.36/1,452.86 = 773.50/x
3. Step 3: Cross multiply
   1,053.36x = 1,452.86 × 773.50
4. Step 4: Simplify right side
   1,053.36x = 1,123,787.21
5. Step 5: Solve for x
   x = 1,123,787.21/1,053.36
6. Step 6: Final answer
   x = 1,066.86