Finding the Fourth Proportional to 3,868.31, 5,802.89 and 1,235.19

Step by Step Solution

1. Step 1: Write the proportion equation
   3,868.31 : 5,802.89 = 1,235.19 : x
2. Step 2: Convert to fraction form
   3,868.31/5,802.89 = 1,235.19/x
3. Step 3: Cross multiply
   3,868.31x = 5,802.89 × 1,235.19
4. Step 4: Simplify right side
   3,868.31x = 7,167,665.52
5. Step 5: Solve for x
   x = 7,167,665.52/3,868.31
6. Step 6: Final answer
   x = 1,852.92