Finding the Fourth Proportional to 1,375.38, 1,897.98 and 786.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.38 : 1,897.98 = 786.11 : x
2. Step 2: Convert to fraction form
   1,375.38/1,897.98 = 786.11/x
3. Step 3: Cross multiply
   1,375.38x = 1,897.98 × 786.11
4. Step 4: Simplify right side
   1,375.38x = 1,492,013.04
5. Step 5: Solve for x
   x = 1,492,013.04/1,375.38
6. Step 6: Final answer
   x = 1,084.80