Finding the Fourth Proportional to 1,553.52, 2,328.59 and 774.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,553.52 : 2,328.59 = 774.10 : x
2. Step 2: Convert to fraction form
   1,553.52/2,328.59 = 774.10/x
3. Step 3: Cross multiply
   1,553.52x = 2,328.59 × 774.10
4. Step 4: Simplify right side
   1,553.52x = 1,802,562.00
5. Step 5: Solve for x
   x = 1,802,562.00/1,553.52
6. Step 6: Final answer
   x = 1,160.31