Finding the Fourth Proportional to 1,739.72, 2,401.60 and 1,111.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,739.72 : 2,401.60 = 1,111.10 : x
2. Step 2: Convert to fraction form
   1,739.72/2,401.60 = 1,111.10/x
3. Step 3: Cross multiply
   1,739.72x = 2,401.60 × 1,111.10
4. Step 4: Simplify right side
   1,739.72x = 2,668,417.76
5. Step 5: Solve for x
   x = 2,668,417.76/1,739.72
6. Step 6: Final answer
   x = 1,533.82