Finding the Fourth Proportional to 1,424.58, 2,137.71 and 904.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,424.58 : 2,137.71 = 904.56 : x
2. Step 2: Convert to fraction form
   1,424.58/2,137.71 = 904.56/x
3. Step 3: Cross multiply
   1,424.58x = 2,137.71 × 904.56
4. Step 4: Simplify right side
   1,424.58x = 1,933,686.96
5. Step 5: Solve for x
   x = 1,933,686.96/1,424.58
6. Step 6: Final answer
   x = 1,357.37