Finding the Fourth Proportional to 1,768.78, 2,446.22 and 1,547.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,768.78 : 2,446.22 = 1,547.35 : x
2. Step 2: Convert to fraction form
   1,768.78/2,446.22 = 1,547.35/x
3. Step 3: Cross multiply
   1,768.78x = 2,446.22 × 1,547.35
4. Step 4: Simplify right side
   1,768.78x = 3,785,158.52
5. Step 5: Solve for x
   x = 3,785,158.52/1,768.78
6. Step 6: Final answer
   x = 2,139.98