Finding the Fourth Proportional to 1,369.09, 1,888.68 and 948.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.09 : 1,888.68 = 948.70 : x
2. Step 2: Convert to fraction form
   1,369.09/1,888.68 = 948.70/x
3. Step 3: Cross multiply
   1,369.09x = 1,888.68 × 948.70
4. Step 4: Simplify right side
   1,369.09x = 1,791,790.72
5. Step 5: Solve for x
   x = 1,791,790.72/1,369.09
6. Step 6: Final answer
   x = 1,308.75