Finding the Fourth Proportional to 2,892.78, 3,991.79 and 1,633.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,892.78 : 3,991.79 = 1,633.91 : x
2. Step 2: Convert to fraction form
   2,892.78/3,991.79 = 1,633.91/x
3. Step 3: Cross multiply
   2,892.78x = 3,991.79 × 1,633.91
4. Step 4: Simplify right side
   2,892.78x = 6,522,209.72
5. Step 5: Solve for x
   x = 6,522,209.72/2,892.78
6. Step 6: Final answer
   x = 2,254.65