Finding the Fourth Proportional to 2,111.58, 3,168.68 and 1,436.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.58 : 3,168.68 = 1,436.85 : x
2. Step 2: Convert to fraction form
   2,111.58/3,168.68 = 1,436.85/x
3. Step 3: Cross multiply
   2,111.58x = 3,168.68 × 1,436.85
4. Step 4: Simplify right side
   2,111.58x = 4,552,910.67
5. Step 5: Solve for x
   x = 4,552,910.67/2,111.58
6. Step 6: Final answer
   x = 2,156.16