Finding the Fourth Proportional to 1,479.78, 2,042.37 and 955.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,479.78 : 2,042.37 = 955.98 : x
2. Step 2: Convert to fraction form
   1,479.78/2,042.37 = 955.98/x
3. Step 3: Cross multiply
   1,479.78x = 2,042.37 × 955.98
4. Step 4: Simplify right side
   1,479.78x = 1,952,464.87
5. Step 5: Solve for x
   x = 1,952,464.87/1,479.78
6. Step 6: Final answer
   x = 1,319.43