Finding the Fourth Proportional to 2,356.32, 3,535.86 and 969.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,356.32 : 3,535.86 = 969.90 : x
2. Step 2: Convert to fraction form
   2,356.32/3,535.86 = 969.90/x
3. Step 3: Cross multiply
   2,356.32x = 3,535.86 × 969.90
4. Step 4: Simplify right side
   2,356.32x = 3,429,430.61
5. Step 5: Solve for x
   x = 3,429,430.61/2,356.32
6. Step 6: Final answer
   x = 1,455.42