Finding the Fourth Proportional to 2,137.86, 3,203.69 and 904.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,137.86 : 3,203.69 = 904.59 : x
2. Step 2: Convert to fraction form
   2,137.86/3,203.69 = 904.59/x
3. Step 3: Cross multiply
   2,137.86x = 3,203.69 × 904.59
4. Step 4: Simplify right side
   2,137.86x = 2,898,021.41
5. Step 5: Solve for x
   x = 2,898,021.41/2,137.86
6. Step 6: Final answer
   x = 1,355.57