Finding the Fourth Proportional to 1,686,257.72, 2,327,090.72 and 922,311.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686,257.72 : 2,327,090.72 = 922,311.28 : x
2. Step 2: Convert to fraction form
   1,686,257.72/2,327,090.72 = 922,311.28/x
3. Step 3: Cross multiply
   1,686,257.72x = 2,327,090.72 × 922,311.28
4. Step 4: Simplify right side
   1,686,257.72x = 2,146,302,020,639.32
5. Step 5: Solve for x
   x = 2,146,302,020,639.32/1,686,257.72
6. Step 6: Final answer
   x = 1,272,819.69