Finding the Fourth Proportional to 1,140.31, 1,707.38 and 591.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,140.31 : 1,707.38 = 591.34 : x
2. Step 2: Convert to fraction form
   1,140.31/1,707.38 = 591.34/x
3. Step 3: Cross multiply
   1,140.31x = 1,707.38 × 591.34
4. Step 4: Simplify right side
   1,140.31x = 1,009,641.39
5. Step 5: Solve for x
   x = 1,009,641.39/1,140.31
6. Step 6: Final answer
   x = 885.41