Finding the Fourth Proportional to 3,377.82, 5,066.78 and 1,428.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,377.82 : 5,066.78 = 1,428.60 : x
2. Step 2: Convert to fraction form
   3,377.82/5,066.78 = 1,428.60/x
3. Step 3: Cross multiply
   3,377.82x = 5,066.78 × 1,428.60
4. Step 4: Simplify right side
   3,377.82x = 7,238,394.77
5. Step 5: Solve for x
   x = 7,238,394.77/3,377.82
6. Step 6: Final answer
   x = 2,142.92