Finding the Fourth Proportional to 1,458.52, 2,012.52 and 869.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,458.52 : 2,012.52 = 869.08 : x
2. Step 2: Convert to fraction form
   1,458.52/2,012.52 = 869.08/x
3. Step 3: Cross multiply
   1,458.52x = 2,012.52 × 869.08
4. Step 4: Simplify right side
   1,458.52x = 1,749,040.88
5. Step 5: Solve for x
   x = 1,749,040.88/1,458.52
6. Step 6: Final answer
   x = 1,199.19