Finding the Fourth Proportional to 1,488.73, 2,053.51 and 958.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.73 : 2,053.51 = 958.31 : x
2. Step 2: Convert to fraction form
   1,488.73/2,053.51 = 958.31/x
3. Step 3: Cross multiply
   1,488.73x = 2,053.51 × 958.31
4. Step 4: Simplify right side
   1,488.73x = 1,967,888.90
5. Step 5: Solve for x
   x = 1,967,888.90/1,488.73
6. Step 6: Final answer
   x = 1,321.86