Finding the Fourth Proportional to 1,990.38, 2,746.59 and 1,194.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,990.38 : 2,746.59 = 1,194.15 : x
2. Step 2: Convert to fraction form
   1,990.38/2,746.59 = 1,194.15/x
3. Step 3: Cross multiply
   1,990.38x = 2,746.59 × 1,194.15
4. Step 4: Simplify right side
   1,990.38x = 3,279,840.45
5. Step 5: Solve for x
   x = 3,279,840.45/1,990.38
6. Step 6: Final answer
   x = 1,647.85