Finding the Fourth Proportional to 2,312.56, 3,470.52 and 926.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,312.56 : 3,470.52 = 926.28 : x
2. Step 2: Convert to fraction form
   2,312.56/3,470.52 = 926.28/x
3. Step 3: Cross multiply
   2,312.56x = 3,470.52 × 926.28
4. Step 4: Simplify right side
   2,312.56x = 3,214,673.27
5. Step 5: Solve for x
   x = 3,214,673.27/2,312.56
6. Step 6: Final answer
   x = 1,390.09