Finding the Fourth Proportional to 2,287, 3,156.06 and 1,931.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287 : 3,156.06 = 1,931.50 : x
2. Step 2: Convert to fraction form
   2,287/3,156.06 = 1,931.50/x
3. Step 3: Cross multiply
   2,287x = 3,156.06 × 1,931.50
4. Step 4: Simplify right side
   2,287x = 6,095,929.89
5. Step 5: Solve for x
   x = 6,095,929.89/2,287
6. Step 6: Final answer
   x = 2,665.47