Finding the Fourth Proportional to 1,111.82, 1,664.15 and 591.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.82 : 1,664.15 = 591.08 : x
2. Step 2: Convert to fraction form
   1,111.82/1,664.15 = 591.08/x
3. Step 3: Cross multiply
   1,111.82x = 1,664.15 × 591.08
4. Step 4: Simplify right side
   1,111.82x = 983,634.51
5. Step 5: Solve for x
   x = 983,634.51/1,111.82
6. Step 6: Final answer
   x = 884.71