Finding the Fourth Proportional to 1,111.83, 1,664.13 and 591.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.83 : 1,664.13 = 591.09 : x
2. Step 2: Convert to fraction form
   1,111.83/1,664.13 = 591.09/x
3. Step 3: Cross multiply
   1,111.83x = 1,664.13 × 591.09
4. Step 4: Simplify right side
   1,111.83x = 983,650.60
5. Step 5: Solve for x
   x = 983,650.60/1,111.83
6. Step 6: Final answer
   x = 884.71