Finding the Fourth Proportional to 2,087.82, 3,130.25 and 1,047.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.82 : 3,130.25 = 1,047.07 : x
2. Step 2: Convert to fraction form
   2,087.82/3,130.25 = 1,047.07/x
3. Step 3: Cross multiply
   2,087.82x = 3,130.25 × 1,047.07
4. Step 4: Simplify right side
   2,087.82x = 3,277,585.63
5. Step 5: Solve for x
   x = 3,277,585.63/2,087.82
6. Step 6: Final answer
   x = 1,569.86