Finding the Fourth Proportional to 1,435.30, 1,981.12 and 875.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.30 : 1,981.12 = 875.99 : x
2. Step 2: Convert to fraction form
   1,435.30/1,981.12 = 875.99/x
3. Step 3: Cross multiply
   1,435.30x = 1,981.12 × 875.99
4. Step 4: Simplify right side
   1,435.30x = 1,735,441.31
5. Step 5: Solve for x
   x = 1,735,441.31/1,435.30
6. Step 6: Final answer
   x = 1,209.11