Finding the Fourth Proportional to 1,296.42, 1,935.17 and 1,124.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,296.42 : 1,935.17 = 1,124.30 : x
2. Step 2: Convert to fraction form
   1,296.42/1,935.17 = 1,124.30/x
3. Step 3: Cross multiply
   1,296.42x = 1,935.17 × 1,124.30
4. Step 4: Simplify right side
   1,296.42x = 2,175,696.33
5. Step 5: Solve for x
   x = 2,175,696.33/1,296.42
6. Step 6: Final answer
   x = 1,678.23