Finding the Fourth Proportional to 1,501.92, 2,073.06 and 912.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.92 : 2,073.06 = 912.78 : x
2. Step 2: Convert to fraction form
   1,501.92/2,073.06 = 912.78/x
3. Step 3: Cross multiply
   1,501.92x = 2,073.06 × 912.78
4. Step 4: Simplify right side
   1,501.92x = 1,892,247.71
5. Step 5: Solve for x
   x = 1,892,247.71/1,501.92
6. Step 6: Final answer
   x = 1,259.89