Finding the Fourth Proportional to 1,931.71, 2,665.76 and 1,047.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.71 : 2,665.76 = 1,047.51 : x
2. Step 2: Convert to fraction form
   1,931.71/2,665.76 = 1,047.51/x
3. Step 3: Cross multiply
   1,931.71x = 2,665.76 × 1,047.51
4. Step 4: Simplify right side
   1,931.71x = 2,792,410.26
5. Step 5: Solve for x
   x = 2,792,410.26/1,931.71
6. Step 6: Final answer
   x = 1,445.56