Finding the Fourth Proportional to 2,087.49, 3,126.98 and 988.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.49 : 3,126.98 = 988.52 : x
2. Step 2: Convert to fraction form
   2,087.49/3,126.98 = 988.52/x
3. Step 3: Cross multiply
   2,087.49x = 3,126.98 × 988.52
4. Step 4: Simplify right side
   2,087.49x = 3,091,075.27
5. Step 5: Solve for x
   x = 3,091,075.27/2,087.49
6. Step 6: Final answer
   x = 1,480.76