Finding the Fourth Proportional to 1,383,510, 1,909,273 and 779,898

Step by Step Solution

1. Step 1: Write the proportion equation
   1,383,510 : 1,909,273 = 779,898 : x
2. Step 2: Convert to fraction form
   1,383,510/1,909,273 = 779,898/x
3. Step 3: Cross multiply
   1,383,510x = 1,909,273 × 779,898
4. Step 4: Simplify right side
   1,383,510x = 1,489,038,194,154
5. Step 5: Solve for x
   x = 1,489,038,194,154/1,383,510
6. Step 6: Final answer
   x = 1,076,275.70