Finding the Fourth Proportional to 2,633.50, 3,947.82 and 988.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,633.50 : 3,947.82 = 988.93 : x
2. Step 2: Convert to fraction form
   2,633.50/3,947.82 = 988.93/x
3. Step 3: Cross multiply
   2,633.50x = 3,947.82 × 988.93
4. Step 4: Simplify right side
   2,633.50x = 3,904,117.63
5. Step 5: Solve for x
   x = 3,904,117.63/2,633.50
6. Step 6: Final answer
   x = 1,482.48