Finding the Fourth Proportional to 1,854.35, 2,773.10 and 1,386.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,854.35 : 2,773.10 = 1,386.15 : x
2. Step 2: Convert to fraction form
   1,854.35/2,773.10 = 1,386.15/x
3. Step 3: Cross multiply
   1,854.35x = 2,773.10 × 1,386.15
4. Step 4: Simplify right side
   1,854.35x = 3,843,936.03
5. Step 5: Solve for x
   x = 3,843,936.03/1,854.35
6. Step 6: Final answer
   x = 2,072.93