Finding the Fourth Proportional to 2,080.13, 2,870.53 and 1,241.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.13 : 2,870.53 = 1,241.78 : x
2. Step 2: Convert to fraction form
   2,080.13/2,870.53 = 1,241.78/x
3. Step 3: Cross multiply
   2,080.13x = 2,870.53 × 1,241.78
4. Step 4: Simplify right side
   2,080.13x = 3,564,549.29
5. Step 5: Solve for x
   x = 3,564,549.29/2,080.13
6. Step 6: Final answer
   x = 1,713.62