Finding the Fourth Proportional to 1,434.63, 1,979.43 and 1,010.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.63 : 1,979.43 = 1,010.22 : x
2. Step 2: Convert to fraction form
   1,434.63/1,979.43 = 1,010.22/x
3. Step 3: Cross multiply
   1,434.63x = 1,979.43 × 1,010.22
4. Step 4: Simplify right side
   1,434.63x = 1,999,659.77
5. Step 5: Solve for x
   x = 1,999,659.77/1,434.63
6. Step 6: Final answer
   x = 1,393.85