Finding the Fourth Proportional to 1,705.51, 2,560.31 and 1,156.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,705.51 : 2,560.31 = 1,156.03 : x
2. Step 2: Convert to fraction form
   1,705.51/2,560.31 = 1,156.03/x
3. Step 3: Cross multiply
   1,705.51x = 2,560.31 × 1,156.03
4. Step 4: Simplify right side
   1,705.51x = 2,959,782.37
5. Step 5: Solve for x
   x = 2,959,782.37/1,705.51
6. Step 6: Final answer
   x = 1,735.42