Finding the Fourth Proportional to 1,131.86, 1,697.99 and 583.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.86 : 1,697.99 = 583.89 : x
2. Step 2: Convert to fraction form
   1,131.86/1,697.99 = 583.89/x
3. Step 3: Cross multiply
   1,131.86x = 1,697.99 × 583.89
4. Step 4: Simplify right side
   1,131.86x = 991,439.38
5. Step 5: Solve for x
   x = 991,439.38/1,131.86
6. Step 6: Final answer
   x = 875.94