Finding the Fourth Proportional to 1,550.04, 2,323.98 and 780.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.04 : 2,323.98 = 780.12 : x
2. Step 2: Convert to fraction form
   1,550.04/2,323.98 = 780.12/x
3. Step 3: Cross multiply
   1,550.04x = 2,323.98 × 780.12
4. Step 4: Simplify right side
   1,550.04x = 1,812,983.28
5. Step 5: Solve for x
   x = 1,812,983.28/1,550.04
6. Step 6: Final answer
   x = 1,169.64