Finding the Fourth Proportional to 1,253.82, 1,878.34 and 760.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253.82 : 1,878.34 = 760.38 : x
2. Step 2: Convert to fraction form
   1,253.82/1,878.34 = 760.38/x
3. Step 3: Cross multiply
   1,253.82x = 1,878.34 × 760.38
4. Step 4: Simplify right side
   1,253.82x = 1,428,255.22
5. Step 5: Solve for x
   x = 1,428,255.22/1,253.82
6. Step 6: Final answer
   x = 1,139.12