Finding the Fourth Proportional to 1,570.32, 2,352.98 and 829.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,570.32 : 2,352.98 = 829.91 : x
2. Step 2: Convert to fraction form
   1,570.32/2,352.98 = 829.91/x
3. Step 3: Cross multiply
   1,570.32x = 2,352.98 × 829.91
4. Step 4: Simplify right side
   1,570.32x = 1,952,769.59
5. Step 5: Solve for x
   x = 1,952,769.59/1,570.32
6. Step 6: Final answer
   x = 1,243.55