Finding the Fourth Proportional to 1,435.50, 1,979.88 and 875.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.50 : 1,979.88 = 875.76 : x
2. Step 2: Convert to fraction form
   1,435.50/1,979.88 = 875.76/x
3. Step 3: Cross multiply
   1,435.50x = 1,979.88 × 875.76
4. Step 4: Simplify right side
   1,435.50x = 1,733,899.71
5. Step 5: Solve for x
   x = 1,733,899.71/1,435.50
6. Step 6: Final answer
   x = 1,207.87