Finding the Fourth Proportional to 1,730.72, 2,597.16 and 909.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,730.72 : 2,597.16 = 909.57 : x
2. Step 2: Convert to fraction form
   1,730.72/2,597.16 = 909.57/x
3. Step 3: Cross multiply
   1,730.72x = 2,597.16 × 909.57
4. Step 4: Simplify right side
   1,730.72x = 2,362,298.82
5. Step 5: Solve for x
   x = 2,362,298.82/1,730.72
6. Step 6: Final answer
   x = 1,364.93