Finding the Fourth Proportional to 2,094.34, 3,141.45 and 861.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,094.34 : 3,141.45 = 861.40 : x
2. Step 2: Convert to fraction form
   2,094.34/3,141.45 = 861.40/x
3. Step 3: Cross multiply
   2,094.34x = 3,141.45 × 861.40
4. Step 4: Simplify right side
   2,094.34x = 2,706,045.03
5. Step 5: Solve for x
   x = 2,706,045.03/2,094.34
6. Step 6: Final answer
   x = 1,292.08