Finding the Fourth Proportional to 2,662.35, 3,672.59 and 1,990.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.35 : 3,672.59 = 1,990.86 : x
2. Step 2: Convert to fraction form
   2,662.35/3,672.59 = 1,990.86/x
3. Step 3: Cross multiply
   2,662.35x = 3,672.59 × 1,990.86
4. Step 4: Simplify right side
   2,662.35x = 7,311,602.57
5. Step 5: Solve for x
   x = 7,311,602.57/2,662.35
6. Step 6: Final answer
   x = 2,746.30