Finding the Fourth Proportional to 1,419.12, 2,127.86 and 760.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.12 : 2,127.86 = 760.18 : x
2. Step 2: Convert to fraction form
   1,419.12/2,127.86 = 760.18/x
3. Step 3: Cross multiply
   1,419.12x = 2,127.86 × 760.18
4. Step 4: Simplify right side
   1,419.12x = 1,617,556.61
5. Step 5: Solve for x
   x = 1,617,556.61/1,419.12
6. Step 6: Final answer
   x = 1,139.83