Finding the Fourth Proportional to 2,111.73, 2,914.23 and 1,167.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.73 : 2,914.23 = 1,167.58 : x
2. Step 2: Convert to fraction form
   2,111.73/2,914.23 = 1,167.58/x
3. Step 3: Cross multiply
   2,111.73x = 2,914.23 × 1,167.58
4. Step 4: Simplify right side
   2,111.73x = 3,402,596.66
5. Step 5: Solve for x
   x = 3,402,596.66/2,111.73
6. Step 6: Final answer
   x = 1,611.28