Finding the Fourth Proportional to 1,914.82, 2,869.83 and 817.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,914.82 : 2,869.83 = 817.90 : x
2. Step 2: Convert to fraction form
   1,914.82/2,869.83 = 817.90/x
3. Step 3: Cross multiply
   1,914.82x = 2,869.83 × 817.90
4. Step 4: Simplify right side
   1,914.82x = 2,347,226.78
5. Step 5: Solve for x
   x = 2,347,226.78/1,914.82
6. Step 6: Final answer
   x = 1,225.82