Finding the Fourth Proportional to 1,479.40, 2,041.56 and 816.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,479.40 : 2,041.56 = 816.25 : x
2. Step 2: Convert to fraction form
   1,479.40/2,041.56 = 816.25/x
3. Step 3: Cross multiply
   1,479.40x = 2,041.56 × 816.25
4. Step 4: Simplify right side
   1,479.40x = 1,666,423.35
5. Step 5: Solve for x
   x = 1,666,423.35/1,479.40
6. Step 6: Final answer
   x = 1,126.42