Finding the Fourth Proportional to 1,597.90, 2,205.16 and 934.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,597.90 : 2,205.16 = 934.78 : x
2. Step 2: Convert to fraction form
   1,597.90/2,205.16 = 934.78/x
3. Step 3: Cross multiply
   1,597.90x = 2,205.16 × 934.78
4. Step 4: Simplify right side
   1,597.90x = 2,061,339.46
5. Step 5: Solve for x
   x = 2,061,339.46/1,597.90
6. Step 6: Final answer
   x = 1,290.03