Finding the Fourth Proportional to 1,520.42, 2,279.83 and 1,026.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,520.42 : 2,279.83 = 1,026.80 : x
2. Step 2: Convert to fraction form
   1,520.42/2,279.83 = 1,026.80/x
3. Step 3: Cross multiply
   1,520.42x = 2,279.83 × 1,026.80
4. Step 4: Simplify right side
   1,520.42x = 2,340,924.31
5. Step 5: Solve for x
   x = 2,340,924.31/1,520.42
6. Step 6: Final answer
   x = 1,539.66