Finding the Fourth Proportional to 1,383,518.16, 1,909,231.56 and 779,904.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,383,518.16 : 1,909,231.56 = 779,904.72 : x
2. Step 2: Convert to fraction form
   1,383,518.16/1,909,231.56 = 779,904.72/x
3. Step 3: Cross multiply
   1,383,518.16x = 1,909,231.56 × 779,904.72
4. Step 4: Simplify right side
   1,383,518.16x = 1,489,018,705,216.96
5. Step 5: Solve for x
   x = 1,489,018,705,216.96/1,383,518.16
6. Step 6: Final answer
   x = 1,076,255.27