Finding the Fourth Proportional to 1,231.31, 1,847.37 and 581.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,231.31 : 1,847.37 = 581.96 : x
2. Step 2: Convert to fraction form
   1,231.31/1,847.37 = 581.96/x
3. Step 3: Cross multiply
   1,231.31x = 1,847.37 × 581.96
4. Step 4: Simplify right side
   1,231.31x = 1,075,095.45
5. Step 5: Solve for x
   x = 1,075,095.45/1,231.31
6. Step 6: Final answer
   x = 873.13