Finding the Fourth Proportional to 1,551.86, 2,328.17 and 772.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,551.86 : 2,328.17 = 772.23 : x
2. Step 2: Convert to fraction form
   1,551.86/2,328.17 = 772.23/x
3. Step 3: Cross multiply
   1,551.86x = 2,328.17 × 772.23
4. Step 4: Simplify right side
   1,551.86x = 1,797,882.72
5. Step 5: Solve for x
   x = 1,797,882.72/1,551.86
6. Step 6: Final answer
   x = 1,158.53