Finding the Fourth Proportional to 2,623.62, 3,931.38 and 1,528.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,623.62 : 3,931.38 = 1,528.50 : x
2. Step 2: Convert to fraction form
   2,623.62/3,931.38 = 1,528.50/x
3. Step 3: Cross multiply
   2,623.62x = 3,931.38 × 1,528.50
4. Step 4: Simplify right side
   2,623.62x = 6,009,114.33
5. Step 5: Solve for x
   x = 6,009,114.33/2,623.62
6. Step 6: Final answer
   x = 2,290.39