Finding the Fourth Proportional to 1,369.86, 1,889.84 and 956.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.86 : 1,889.84 = 956.10 : x
2. Step 2: Convert to fraction form
   1,369.86/1,889.84 = 956.10/x
3. Step 3: Cross multiply
   1,369.86x = 1,889.84 × 956.10
4. Step 4: Simplify right side
   1,369.86x = 1,806,876.02
5. Step 5: Solve for x
   x = 1,806,876.02/1,369.86
6. Step 6: Final answer
   x = 1,319.02