Finding the Fourth Proportional to 1,258,977, 1,887,120.72 and 718,068.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258,977 : 1,887,120.72 = 718,068.54 : x
2. Step 2: Convert to fraction form
   1,258,977/1,887,120.72 = 718,068.54/x
3. Step 3: Cross multiply
   1,258,977x = 1,887,120.72 × 718,068.54
4. Step 4: Simplify right side
   1,258,977x = 1,355,082,020,214.15
5. Step 5: Solve for x
   x = 1,355,082,020,214.15/1,258,977
6. Step 6: Final answer
   x = 1,076,335.80