Finding the Fourth Proportional to 3,384.25, 5,076.27 and 918.99

Step by Step Solution

1. Step 1: Write the proportion equation
   3,384.25 : 5,076.27 = 918.99 : x
2. Step 2: Convert to fraction form
   3,384.25/5,076.27 = 918.99/x
3. Step 3: Cross multiply
   3,384.25x = 5,076.27 × 918.99
4. Step 4: Simplify right side
   3,384.25x = 4,665,041.37
5. Step 5: Solve for x
   x = 4,665,041.37/3,384.25
6. Step 6: Final answer
   x = 1,378.46