Finding the Fourth Proportional to 3,685.59, 5,528.25 and 912.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,685.59 : 5,528.25 = 912.27 : x
2. Step 2: Convert to fraction form
   3,685.59/5,528.25 = 912.27/x
3. Step 3: Cross multiply
   3,685.59x = 5,528.25 × 912.27
4. Step 4: Simplify right side
   3,685.59x = 5,043,256.63
5. Step 5: Solve for x
   x = 5,043,256.63/3,685.59
6. Step 6: Final answer
   x = 1,368.37