Finding the Fourth Proportional to 2,618.90, 3,929.02 and 975.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618.90 : 3,929.02 = 975.50 : x
2. Step 2: Convert to fraction form
   2,618.90/3,929.02 = 975.50/x
3. Step 3: Cross multiply
   2,618.90x = 3,929.02 × 975.50
4. Step 4: Simplify right side
   2,618.90x = 3,832,759.01
5. Step 5: Solve for x
   x = 3,832,759.01/2,618.90
6. Step 6: Final answer
   x = 1,463.50