Finding the Fourth Proportional to 2,194.59, 3,291.78 and 551.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,194.59 : 3,291.78 = 551.10 : x
2. Step 2: Convert to fraction form
   2,194.59/3,291.78 = 551.10/x
3. Step 3: Cross multiply
   2,194.59x = 3,291.78 × 551.10
4. Step 4: Simplify right side
   2,194.59x = 1,814,099.96
5. Step 5: Solve for x
   x = 1,814,099.96/2,194.59
6. Step 6: Final answer
   x = 826.62