Finding the Fourth Proportional to 1,435.43, 1,980.24 and 875.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.43 : 1,980.24 = 875.45 : x
2. Step 2: Convert to fraction form
   1,435.43/1,980.24 = 875.45/x
3. Step 3: Cross multiply
   1,435.43x = 1,980.24 × 875.45
4. Step 4: Simplify right side
   1,435.43x = 1,733,601.11
5. Step 5: Solve for x
   x = 1,733,601.11/1,435.43
6. Step 6: Final answer
   x = 1,207.72