Finding the Fourth Proportional to 1,931.49, 2,665.46 and 1,047.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.49 : 2,665.46 = 1,047.30 : x
2. Step 2: Convert to fraction form
   1,931.49/2,665.46 = 1,047.30/x
3. Step 3: Cross multiply
   1,931.49x = 2,665.46 × 1,047.30
4. Step 4: Simplify right side
   1,931.49x = 2,791,525.15
5. Step 5: Solve for x
   x = 2,791,525.15/1,931.49
6. Step 6: Final answer
   x = 1,445.27