Finding the Fourth Proportional to 1,727.72, 2,588.74 and 904.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,727.72 : 2,588.74 = 904.76 : x
2. Step 2: Convert to fraction form
   1,727.72/2,588.74 = 904.76/x
3. Step 3: Cross multiply
   1,727.72x = 2,588.74 × 904.76
4. Step 4: Simplify right side
   1,727.72x = 2,342,188.40
5. Step 5: Solve for x
   x = 2,342,188.40/1,727.72
6. Step 6: Final answer
   x = 1,355.65