Finding the Fourth Proportional to 1,740.25, 2,606.61 and 1,155.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,740.25 : 2,606.61 = 1,155.53 : x
2. Step 2: Convert to fraction form
   1,740.25/2,606.61 = 1,155.53/x
3. Step 3: Cross multiply
   1,740.25x = 2,606.61 × 1,155.53
4. Step 4: Simplify right side
   1,740.25x = 3,012,026.90
5. Step 5: Solve for x
   x = 3,012,026.90/1,740.25
6. Step 6: Final answer
   x = 1,730.80