Finding the Fourth Proportional to 1,864.52, 2,796.82 and 890.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,864.52 : 2,796.82 = 890.72 : x
2. Step 2: Convert to fraction form
   1,864.52/2,796.82 = 890.72/x
3. Step 3: Cross multiply
   1,864.52x = 2,796.82 × 890.72
4. Step 4: Simplify right side
   1,864.52x = 2,491,183.51
5. Step 5: Solve for x
   x = 2,491,183.51/1,864.52
6. Step 6: Final answer
   x = 1,336.10