Finding the Fourth Proportional to 2,121.39, 2,926.94 and 1,375.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,121.39 : 2,926.94 = 1,375.38 : x
2. Step 2: Convert to fraction form
   2,121.39/2,926.94 = 1,375.38/x
3. Step 3: Cross multiply
   2,121.39x = 2,926.94 × 1,375.38
4. Step 4: Simplify right side
   2,121.39x = 4,025,647.86
5. Step 5: Solve for x
   x = 4,025,647.86/2,121.39
6. Step 6: Final answer
   x = 1,897.65