Finding the Fourth Proportional to 1,429.88, 1,973.25 and 840.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.88 : 1,973.25 = 840.44 : x
2. Step 2: Convert to fraction form
   1,429.88/1,973.25 = 840.44/x
3. Step 3: Cross multiply
   1,429.88x = 1,973.25 × 840.44
4. Step 4: Simplify right side
   1,429.88x = 1,658,398.23
5. Step 5: Solve for x
   x = 1,658,398.23/1,429.88
6. Step 6: Final answer
   x = 1,159.82