Finding the Fourth Proportional to 2,111.67, 3,166.29 and 1,246.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.67 : 3,166.29 = 1,246.59 : x
2. Step 2: Convert to fraction form
   2,111.67/3,166.29 = 1,246.59/x
3. Step 3: Cross multiply
   2,111.67x = 3,166.29 × 1,246.59
4. Step 4: Simplify right side
   2,111.67x = 3,947,065.45
5. Step 5: Solve for x
   x = 3,947,065.45/2,111.67
6. Step 6: Final answer
   x = 1,869.17