Finding the Fourth Proportional to 1,072.92, 1,610.06 and 525.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072.92 : 1,610.06 = 525.32 : x
2. Step 2: Convert to fraction form
   1,072.92/1,610.06 = 525.32/x
3. Step 3: Cross multiply
   1,072.92x = 1,610.06 × 525.32
4. Step 4: Simplify right side
   1,072.92x = 845,796.72
5. Step 5: Solve for x
   x = 845,796.72/1,072.92
6. Step 6: Final answer
   x = 788.31