Finding the Fourth Proportional to 2,167.59, 2,990.82 and 1,283.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,167.59 : 2,990.82 = 1,283.67 : x
2. Step 2: Convert to fraction form
   2,167.59/2,990.82 = 1,283.67/x
3. Step 3: Cross multiply
   2,167.59x = 2,990.82 × 1,283.67
4. Step 4: Simplify right side
   2,167.59x = 3,839,225.91
5. Step 5: Solve for x
   x = 3,839,225.91/2,167.59
6. Step 6: Final answer
   x = 1,771.20