Finding the Fourth Proportional to 3,677.89, 5,516.79 and 904.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,677.89 : 5,516.79 = 904.60 : x
2. Step 2: Convert to fraction form
   3,677.89/5,516.79 = 904.60/x
3. Step 3: Cross multiply
   3,677.89x = 5,516.79 × 904.60
4. Step 4: Simplify right side
   3,677.89x = 4,990,488.23
5. Step 5: Solve for x
   x = 4,990,488.23/3,677.89
6. Step 6: Final answer
   x = 1,356.89