Finding the Fourth Proportional to 1,111.32, 1,665.36 and 583.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.32 : 1,665.36 = 583.74 : x
2. Step 2: Convert to fraction form
   1,111.32/1,665.36 = 583.74/x
3. Step 3: Cross multiply
   1,111.32x = 1,665.36 × 583.74
4. Step 4: Simplify right side
   1,111.32x = 972,137.25
5. Step 5: Solve for x
   x = 972,137.25/1,111.32
6. Step 6: Final answer
   x = 874.76