Finding the Fourth Proportional to 1,240.96, 1,860.89 and 583.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,240.96 : 1,860.89 = 583.02 : x
2. Step 2: Convert to fraction form
   1,240.96/1,860.89 = 583.02/x
3. Step 3: Cross multiply
   1,240.96x = 1,860.89 × 583.02
4. Step 4: Simplify right side
   1,240.96x = 1,084,930.89
5. Step 5: Solve for x
   x = 1,084,930.89/1,240.96
6. Step 6: Final answer
   x = 874.27