Finding the Fourth Proportional to 1,965.83, 2,712.89 and 1,126.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,965.83 : 2,712.89 = 1,126.40 : x
2. Step 2: Convert to fraction form
   1,965.83/2,712.89 = 1,126.40/x
3. Step 3: Cross multiply
   1,965.83x = 2,712.89 × 1,126.40
4. Step 4: Simplify right side
   1,965.83x = 3,055,788.55
5. Step 5: Solve for x
   x = 3,055,788.55/1,965.83
6. Step 6: Final answer
   x = 1,554.46