Finding the Fourth Proportional to 2,141.03, 3,211.52 and 842.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.03 : 3,211.52 = 842.50 : x
2. Step 2: Convert to fraction form
   2,141.03/3,211.52 = 842.50/x
3. Step 3: Cross multiply
   2,141.03x = 3,211.52 × 842.50
4. Step 4: Simplify right side
   2,141.03x = 2,705,705.40
5. Step 5: Solve for x
   x = 2,705,705.40/2,141.03
6. Step 6: Final answer
   x = 1,263.74