Finding the Fourth Proportional to 1,434.80, 1,979.98 and 875.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.80 : 1,979.98 = 875.07 : x
2. Step 2: Convert to fraction form
   1,434.80/1,979.98 = 875.07/x
3. Step 3: Cross multiply
   1,434.80x = 1,979.98 × 875.07
4. Step 4: Simplify right side
   1,434.80x = 1,732,618.91
5. Step 5: Solve for x
   x = 1,732,618.91/1,434.80
6. Step 6: Final answer
   x = 1,207.57