Finding the Fourth Proportional to 1,705.89, 2,557.23 and 1,553.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,705.89 : 2,557.23 = 1,553.72 : x
2. Step 2: Convert to fraction form
   1,705.89/2,557.23 = 1,553.72/x
3. Step 3: Cross multiply
   1,705.89x = 2,557.23 × 1,553.72
4. Step 4: Simplify right side
   1,705.89x = 3,973,213.00
5. Step 5: Solve for x
   x = 3,973,213.00/1,705.89
6. Step 6: Final answer
   x = 2,329.12