Finding the Fourth Proportional to 2,393.15, 3,302.98 and 1,398.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,393.15 : 3,302.98 = 1,398.67 : x
2. Step 2: Convert to fraction form
   2,393.15/3,302.98 = 1,398.67/x
3. Step 3: Cross multiply
   2,393.15x = 3,302.98 × 1,398.67
4. Step 4: Simplify right side
   2,393.15x = 4,619,767.28
5. Step 5: Solve for x
   x = 4,619,767.28/2,393.15
6. Step 6: Final answer
   x = 1,930.42