Finding the Fourth Proportional to 2,719.50, 4,080.86 and 988.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,719.50 : 4,080.86 = 988.26 : x
2. Step 2: Convert to fraction form
   2,719.50/4,080.86 = 988.26/x
3. Step 3: Cross multiply
   2,719.50x = 4,080.86 × 988.26
4. Step 4: Simplify right side
   2,719.50x = 4,032,937.87
5. Step 5: Solve for x
   x = 4,032,937.87/2,719.50
6. Step 6: Final answer
   x = 1,482.97