Finding the Fourth Proportional to 2,753.75, 4,128.27 and 904.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,753.75 : 4,128.27 = 904.37 : x
2. Step 2: Convert to fraction form
   2,753.75/4,128.27 = 904.37/x
3. Step 3: Cross multiply
   2,753.75x = 4,128.27 × 904.37
4. Step 4: Simplify right side
   2,753.75x = 3,733,459.51
5. Step 5: Solve for x
   x = 3,733,459.51/2,753.75
6. Step 6: Final answer
   x = 1,355.77