Finding the Fourth Proportional to 1,074.51, 1,609.37 and 1,048.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,074.51 : 1,609.37 = 1,048.32 : x
2. Step 2: Convert to fraction form
   1,074.51/1,609.37 = 1,048.32/x
3. Step 3: Cross multiply
   1,074.51x = 1,609.37 × 1,048.32
4. Step 4: Simplify right side
   1,074.51x = 1,687,141.40
5. Step 5: Solve for x
   x = 1,687,141.40/1,074.51
6. Step 6: Final answer
   x = 1,570.15