Finding the Fourth Proportional to 1,368.86, 1,888.46 and 955.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.86 : 1,888.46 = 955.10 : x
2. Step 2: Convert to fraction form
   1,368.86/1,888.46 = 955.10/x
3. Step 3: Cross multiply
   1,368.86x = 1,888.46 × 955.10
4. Step 4: Simplify right side
   1,368.86x = 1,803,668.15
5. Step 5: Solve for x
   x = 1,803,668.15/1,368.86
6. Step 6: Final answer
   x = 1,317.64