Finding the Fourth Proportional to 2,869.94, 4,280.72 and 2,607.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,869.94 : 4,280.72 = 2,607.50 : x
2. Step 2: Convert to fraction form
   2,869.94/4,280.72 = 2,607.50/x
3. Step 3: Cross multiply
   2,869.94x = 4,280.72 × 2,607.50
4. Step 4: Simplify right side
   2,869.94x = 11,161,977.40
5. Step 5: Solve for x
   x = 11,161,977.40/2,869.94
6. Step 6: Final answer
   x = 3,889.27