Finding the Fourth Proportional to 2,705.60, 4,059.98 and 1,145.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,705.60 : 4,059.98 = 1,145.50 : x
2. Step 2: Convert to fraction form
   2,705.60/4,059.98 = 1,145.50/x
3. Step 3: Cross multiply
   2,705.60x = 4,059.98 × 1,145.50
4. Step 4: Simplify right side
   2,705.60x = 4,650,707.09
5. Step 5: Solve for x
   x = 4,650,707.09/2,705.60
6. Step 6: Final answer
   x = 1,718.92