Finding the Fourth Proportional to 2,126.30, 3,187.40 and 894.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,126.30 : 3,187.40 = 894.78 : x
2. Step 2: Convert to fraction form
   2,126.30/3,187.40 = 894.78/x
3. Step 3: Cross multiply
   2,126.30x = 3,187.40 × 894.78
4. Step 4: Simplify right side
   2,126.30x = 2,852,017.30
5. Step 5: Solve for x
   x = 2,852,017.30/2,126.30
6. Step 6: Final answer
   x = 1,341.31