Finding the Fourth Proportional to 2,637.34, 3,955.83 and 905.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,637.34 : 3,955.83 = 905.74 : x
2. Step 2: Convert to fraction form
   2,637.34/3,955.83 = 905.74/x
3. Step 3: Cross multiply
   2,637.34x = 3,955.83 × 905.74
4. Step 4: Simplify right side
   2,637.34x = 3,582,953.46
5. Step 5: Solve for x
   x = 3,582,953.46/2,637.34
6. Step 6: Final answer
   x = 1,358.55