Finding the Fourth Proportional to 2,428.30, 3,641.68 and 784.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,428.30 : 3,641.68 = 784.54 : x
2. Step 2: Convert to fraction form
   2,428.30/3,641.68 = 784.54/x
3. Step 3: Cross multiply
   2,428.30x = 3,641.68 × 784.54
4. Step 4: Simplify right side
   2,428.30x = 2,857,043.63
5. Step 5: Solve for x
   x = 2,857,043.63/2,428.30
6. Step 6: Final answer
   x = 1,176.56