Finding the Fourth Proportional to 1,091.31, 1,505.98 and 593.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,091.31 : 1,505.98 = 593.94 : x
2. Step 2: Convert to fraction form
   1,091.31/1,505.98 = 593.94/x
3. Step 3: Cross multiply
   1,091.31x = 1,505.98 × 593.94
4. Step 4: Simplify right side
   1,091.31x = 894,461.76
5. Step 5: Solve for x
   x = 894,461.76/1,091.31
6. Step 6: Final answer
   x = 819.62