Finding the Fourth Proportional to 1,429.76, 1,973.22 and 870.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.76 : 1,973.22 = 870.27 : x
2. Step 2: Convert to fraction form
   1,429.76/1,973.22 = 870.27/x
3. Step 3: Cross multiply
   1,429.76x = 1,973.22 × 870.27
4. Step 4: Simplify right side
   1,429.76x = 1,717,234.17
5. Step 5: Solve for x
   x = 1,717,234.17/1,429.76
6. Step 6: Final answer
   x = 1,201.07