Finding the Fourth Proportional to 1,479.02, 2,041.07 and 815.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,479.02 : 2,041.07 = 815.81 : x
2. Step 2: Convert to fraction form
   1,479.02/2,041.07 = 815.81/x
3. Step 3: Cross multiply
   1,479.02x = 2,041.07 × 815.81
4. Step 4: Simplify right side
   1,479.02x = 1,665,111.03
5. Step 5: Solve for x
   x = 1,665,111.03/1,479.02
6. Step 6: Final answer
   x = 1,125.82