Finding the Fourth Proportional to 1,618.31, 2,233.10 and 955.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,618.31 : 2,233.10 = 955.10 : x
2. Step 2: Convert to fraction form
   1,618.31/2,233.10 = 955.10/x
3. Step 3: Cross multiply
   1,618.31x = 2,233.10 × 955.10
4. Step 4: Simplify right side
   1,618.31x = 2,132,817.87
5. Step 5: Solve for x
   x = 2,132,817.87/1,618.31
6. Step 6: Final answer
   x = 1,317.93