Finding the Fourth Proportional to 1,960.95, 2,938.98 and 987.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,960.95 : 2,938.98 = 987.33 : x
2. Step 2: Convert to fraction form
   1,960.95/2,938.98 = 987.33/x
3. Step 3: Cross multiply
   1,960.95x = 2,938.98 × 987.33
4. Step 4: Simplify right side
   1,960.95x = 2,901,757.85
5. Step 5: Solve for x
   x = 2,901,757.85/1,960.95
6. Step 6: Final answer
   x = 1,479.77