Finding the Fourth Proportional to 1,705.35, 2,553.92 and 972.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,705.35 : 2,553.92 = 972.71 : x
2. Step 2: Convert to fraction form
   1,705.35/2,553.92 = 972.71/x
3. Step 3: Cross multiply
   1,705.35x = 2,553.92 × 972.71
4. Step 4: Simplify right side
   1,705.35x = 2,484,205.89
5. Step 5: Solve for x
   x = 2,484,205.89/1,705.35
6. Step 6: Final answer
   x = 1,456.71