Finding the Fourth Proportional to 1,550.52, 2,323.86 and 780.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.52 : 2,323.86 = 780.60 : x
2. Step 2: Convert to fraction form
   1,550.52/2,323.86 = 780.60/x
3. Step 3: Cross multiply
   1,550.52x = 2,323.86 × 780.60
4. Step 4: Simplify right side
   1,550.52x = 1,814,005.12
5. Step 5: Solve for x
   x = 1,814,005.12/1,550.52
6. Step 6: Final answer
   x = 1,169.93