Finding the Fourth Proportional to 2,287.06, 3,156.12 and 1,292.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.06 : 3,156.12 = 1,292.33 : x
2. Step 2: Convert to fraction form
   2,287.06/3,156.12 = 1,292.33/x
3. Step 3: Cross multiply
   2,287.06x = 3,156.12 × 1,292.33
4. Step 4: Simplify right side
   2,287.06x = 4,078,756.45
5. Step 5: Solve for x
   x = 4,078,756.45/2,287.06
6. Step 6: Final answer
   x = 1,783.41