Finding the Fourth Proportional to 1,507.38, 2,080.27 and 869.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507.38 : 2,080.27 = 869.42 : x
2. Step 2: Convert to fraction form
   1,507.38/2,080.27 = 869.42/x
3. Step 3: Cross multiply
   1,507.38x = 2,080.27 × 869.42
4. Step 4: Simplify right side
   1,507.38x = 1,808,618.04
5. Step 5: Solve for x
   x = 1,808,618.04/1,507.38
6. Step 6: Final answer
   x = 1,199.85