Finding the Fourth Proportional to 1,749.39, 2,621.85 and 928.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,749.39 : 2,621.85 = 928.05 : x
2. Step 2: Convert to fraction form
   1,749.39/2,621.85 = 928.05/x
3. Step 3: Cross multiply
   1,749.39x = 2,621.85 × 928.05
4. Step 4: Simplify right side
   1,749.39x = 2,433,207.89
5. Step 5: Solve for x
   x = 2,433,207.89/1,749.39
6. Step 6: Final answer
   x = 1,390.89