Finding the Fourth Proportional to 1,749.45, 2,621.54 and 1,055.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,749.45 : 2,621.54 = 1,055.35 : x
2. Step 2: Convert to fraction form
   1,749.45/2,621.54 = 1,055.35/x
3. Step 3: Cross multiply
   1,749.45x = 2,621.54 × 1,055.35
4. Step 4: Simplify right side
   1,749.45x = 2,766,648.15
5. Step 5: Solve for x
   x = 2,766,648.15/1,749.45
6. Step 6: Final answer
   x = 1,581.44