Finding the Fourth Proportional to 1,109,248.96, 1,659,495.56 and 840,152.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109,248.96 : 1,659,495.56 = 840,152.28 : x
2. Step 2: Convert to fraction form
   1,109,248.96/1,659,495.56 = 840,152.28/x
3. Step 3: Cross multiply
   1,109,248.96x = 1,659,495.56 × 840,152.28
4. Step 4: Simplify right side
   1,109,248.96x = 1,394,228,978,383.88
5. Step 5: Solve for x
   x = 1,394,228,978,383.88/1,109,248.96
6. Step 6: Final answer
   x = 1,256,912.59