Finding the Fourth Proportional to 1,931.79, 2,665.88 and 1,047.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.79 : 2,665.88 = 1,047.58 : x
2. Step 2: Convert to fraction form
   1,931.79/2,665.88 = 1,047.58/x
3. Step 3: Cross multiply
   1,931.79x = 2,665.88 × 1,047.58
4. Step 4: Simplify right side
   1,931.79x = 2,792,717.33
5. Step 5: Solve for x
   x = 2,792,717.33/1,931.79
6. Step 6: Final answer
   x = 1,445.67