Finding the Fourth Proportional to 1,076,579.72, 1,616,298.06 and 919,815.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076,579.72 : 1,616,298.06 = 919,815.56 : x
2. Step 2: Convert to fraction form
   1,076,579.72/1,616,298.06 = 919,815.56/x
3. Step 3: Cross multiply
   1,076,579.72x = 1,616,298.06 × 919,815.56
4. Step 4: Simplify right side
   1,076,579.72x = 1,486,696,105,185.81
5. Step 5: Solve for x
   x = 1,486,696,105,185.81/1,076,579.72
6. Step 6: Final answer
   x = 1,380,943.81