Finding the Fourth Proportional to 2,428.42, 3,636.73 and 1,385.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,428.42 : 3,636.73 = 1,385.27 : x
2. Step 2: Convert to fraction form
   2,428.42/3,636.73 = 1,385.27/x
3. Step 3: Cross multiply
   2,428.42x = 3,636.73 × 1,385.27
4. Step 4: Simplify right side
   2,428.42x = 5,037,852.97
5. Step 5: Solve for x
   x = 5,037,852.97/2,428.42
6. Step 6: Final answer
   x = 2,074.54