Finding the Fourth Proportional to 2,236.61, 3,355.43 and 1,066.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,236.61 : 3,355.43 = 1,066.57 : x
2. Step 2: Convert to fraction form
   2,236.61/3,355.43 = 1,066.57/x
3. Step 3: Cross multiply
   2,236.61x = 3,355.43 × 1,066.57
4. Step 4: Simplify right side
   2,236.61x = 3,578,787.25
5. Step 5: Solve for x
   x = 3,578,787.25/2,236.61
6. Step 6: Final answer
   x = 1,600.09