Finding the Fourth Proportional to 2,111.51, 3,169.87 and 1,368.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.51 : 3,169.87 = 1,368.69 : x
2. Step 2: Convert to fraction form
   2,111.51/3,169.87 = 1,368.69/x
3. Step 3: Cross multiply
   2,111.51x = 3,169.87 × 1,368.69
4. Step 4: Simplify right side
   2,111.51x = 4,338,569.37
5. Step 5: Solve for x
   x = 4,338,569.37/2,111.51
6. Step 6: Final answer
   x = 2,054.72