Finding the Fourth Proportional to 1,961.58, 2,705.82 and 1,339.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,961.58 : 2,705.82 = 1,339.50 : x
2. Step 2: Convert to fraction form
   1,961.58/2,705.82 = 1,339.50/x
3. Step 3: Cross multiply
   1,961.58x = 2,705.82 × 1,339.50
4. Step 4: Simplify right side
   1,961.58x = 3,624,445.89
5. Step 5: Solve for x
   x = 3,624,445.89/1,961.58
6. Step 6: Final answer
   x = 1,847.72