Finding the Fourth Proportional to 1,314.91, 1,814.73 and 817.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,314.91 : 1,814.73 = 817.84 : x
2. Step 2: Convert to fraction form
   1,314.91/1,814.73 = 817.84/x
3. Step 3: Cross multiply
   1,314.91x = 1,814.73 × 817.84
4. Step 4: Simplify right side
   1,314.91x = 1,484,158.78
5. Step 5: Solve for x
   x = 1,484,158.78/1,314.91
6. Step 6: Final answer
   x = 1,128.72