Finding the Fourth Proportional to 1,419.83, 2,127.86 and 803.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.83 : 2,127.86 = 803.15 : x
2. Step 2: Convert to fraction form
   1,419.83/2,127.86 = 803.15/x
3. Step 3: Cross multiply
   1,419.83x = 2,127.86 × 803.15
4. Step 4: Simplify right side
   1,419.83x = 1,708,986.74
5. Step 5: Solve for x
   x = 1,708,986.74/1,419.83
6. Step 6: Final answer
   x = 1,203.66