Finding the Fourth Proportional to 1,249.02, 1,870.83 and 762.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,249.02 : 1,870.83 = 762.48 : x
2. Step 2: Convert to fraction form
   1,249.02/1,870.83 = 762.48/x
3. Step 3: Cross multiply
   1,249.02x = 1,870.83 × 762.48
4. Step 4: Simplify right side
   1,249.02x = 1,426,470.46
5. Step 5: Solve for x
   x = 1,426,470.46/1,249.02
6. Step 6: Final answer
   x = 1,142.07