Finding the Fourth Proportional to 2,451.52, 3,674.84 and 991.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,451.52 : 3,674.84 = 991.50 : x
2. Step 2: Convert to fraction form
   2,451.52/3,674.84 = 991.50/x
3. Step 3: Cross multiply
   2,451.52x = 3,674.84 × 991.50
4. Step 4: Simplify right side
   2,451.52x = 3,643,603.86
5. Step 5: Solve for x
   x = 3,643,603.86/2,451.52
6. Step 6: Final answer
   x = 1,486.26