Finding the Fourth Proportional to 2,632.40, 3,947.88 and 988.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,632.40 : 3,947.88 = 988.82 : x
2. Step 2: Convert to fraction form
   2,632.40/3,947.88 = 988.82/x
3. Step 3: Cross multiply
   2,632.40x = 3,947.88 × 988.82
4. Step 4: Simplify right side
   2,632.40x = 3,903,742.70
5. Step 5: Solve for x
   x = 3,903,742.70/2,632.40
6. Step 6: Final answer
   x = 1,482.96