Finding the Fourth Proportional to 1,766.83, 2,651.62 and 890.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,766.83 : 2,651.62 = 890.21 : x
2. Step 2: Convert to fraction form
   1,766.83/2,651.62 = 890.21/x
3. Step 3: Cross multiply
   1,766.83x = 2,651.62 × 890.21
4. Step 4: Simplify right side
   1,766.83x = 2,360,498.64
5. Step 5: Solve for x
   x = 2,360,498.64/1,766.83
6. Step 6: Final answer
   x = 1,336.01