Finding the Fourth Proportional to 1,912.51, 2,866.34 and 1,047.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,912.51 : 2,866.34 = 1,047.43 : x
2. Step 2: Convert to fraction form
   1,912.51/2,866.34 = 1,047.43/x
3. Step 3: Cross multiply
   1,912.51x = 2,866.34 × 1,047.43
4. Step 4: Simplify right side
   1,912.51x = 3,002,290.82
5. Step 5: Solve for x
   x = 3,002,290.82/1,912.51
6. Step 6: Final answer
   x = 1,569.82