Finding the Fourth Proportional to 1,435.51, 1,981.83 and 964.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.51 : 1,981.83 = 964.09 : x
2. Step 2: Convert to fraction form
   1,435.51/1,981.83 = 964.09/x
3. Step 3: Cross multiply
   1,435.51x = 1,981.83 × 964.09
4. Step 4: Simplify right side
   1,435.51x = 1,910,662.48
5. Step 5: Solve for x
   x = 1,910,662.48/1,435.51
6. Step 6: Final answer
   x = 1,331.00