Finding the Fourth Proportional to 1,264.06, 1,895.82 and 398.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,264.06 : 1,895.82 = 398.18 : x
2. Step 2: Convert to fraction form
   1,264.06/1,895.82 = 398.18/x
3. Step 3: Cross multiply
   1,264.06x = 1,895.82 × 398.18
4. Step 4: Simplify right side
   1,264.06x = 754,877.61
5. Step 5: Solve for x
   x = 754,877.61/1,264.06
6. Step 6: Final answer
   x = 597.18