Finding the Fourth Proportional to 1,375.68, 1,896.72 and 1,176.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.68 : 1,896.72 = 1,176.15 : x
2. Step 2: Convert to fraction form
   1,375.68/1,896.72 = 1,176.15/x
3. Step 3: Cross multiply
   1,375.68x = 1,896.72 × 1,176.15
4. Step 4: Simplify right side
   1,375.68x = 2,230,827.23
5. Step 5: Solve for x
   x = 2,230,827.23/1,375.68
6. Step 6: Final answer
   x = 1,621.62