Finding the Fourth Proportional to 1,449.25, 1,999.94 and 786.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,449.25 : 1,999.94 = 786.10 : x
2. Step 2: Convert to fraction form
   1,449.25/1,999.94 = 786.10/x
3. Step 3: Cross multiply
   1,449.25x = 1,999.94 × 786.10
4. Step 4: Simplify right side
   1,449.25x = 1,572,152.83
5. Step 5: Solve for x
   x = 1,572,152.83/1,449.25
6. Step 6: Final answer
   x = 1,084.80