Finding the Fourth Proportional to 2,619, 3,928.71 and 975.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619 : 3,928.71 = 975.15 : x
2. Step 2: Convert to fraction form
   2,619/3,928.71 = 975.15/x
3. Step 3: Cross multiply
   2,619x = 3,928.71 × 975.15
4. Step 4: Simplify right side
   2,619x = 3,831,081.56
5. Step 5: Solve for x
   x = 3,831,081.56/2,619
6. Step 6: Final answer
   x = 1,462.80