Finding the Fourth Proportional to 1,572.30, 2,357.73 and 706.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,572.30 : 2,357.73 = 706.05 : x
2. Step 2: Convert to fraction form
   1,572.30/2,357.73 = 706.05/x
3. Step 3: Cross multiply
   1,572.30x = 2,357.73 × 706.05
4. Step 4: Simplify right side
   1,572.30x = 1,664,675.27
5. Step 5: Solve for x
   x = 1,664,675.27/1,572.30
6. Step 6: Final answer
   x = 1,058.75