Finding the Fourth Proportional to 1,501.76, 2,071.68 and 912.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.76 : 2,071.68 = 912.32 : x
2. Step 2: Convert to fraction form
   1,501.76/2,071.68 = 912.32/x
3. Step 3: Cross multiply
   1,501.76x = 2,071.68 × 912.32
4. Step 4: Simplify right side
   1,501.76x = 1,890,035.10
5. Step 5: Solve for x
   x = 1,890,035.10/1,501.76
6. Step 6: Final answer
   x = 1,258.55