Finding the Fourth Proportional to 1,574.48, 2,357.58 and 1,109.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,574.48 : 2,357.58 = 1,109.74 : x
2. Step 2: Convert to fraction form
   1,574.48/2,357.58 = 1,109.74/x
3. Step 3: Cross multiply
   1,574.48x = 2,357.58 × 1,109.74
4. Step 4: Simplify right side
   1,574.48x = 2,616,300.83
5. Step 5: Solve for x
   x = 2,616,300.83/1,574.48
6. Step 6: Final answer
   x = 1,661.69