Finding the Fourth Proportional to 1,814.31, 2,505.96 and 1,316.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,814.31 : 2,505.96 = 1,316.16 : x
2. Step 2: Convert to fraction form
   1,814.31/2,505.96 = 1,316.16/x
3. Step 3: Cross multiply
   1,814.31x = 2,505.96 × 1,316.16
4. Step 4: Simplify right side
   1,814.31x = 3,298,244.31
5. Step 5: Solve for x
   x = 3,298,244.31/1,814.31
6. Step 6: Final answer
   x = 1,817.91