Finding the Fourth Proportional to 1,942,951.30, 2,912,288.55 and 680,128.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,942,951.30 : 2,912,288.55 = 680,128.90 : x
2. Step 2: Convert to fraction form
   1,942,951.30/2,912,288.55 = 680,128.90/x
3. Step 3: Cross multiply
   1,942,951.30x = 2,912,288.55 × 680,128.90
4. Step 4: Simplify right side
   1,942,951.30x = 1,980,731,607,994.10
5. Step 5: Solve for x
   x = 1,980,731,607,994.10/1,942,951.30
6. Step 6: Final answer
   x = 1,019,444.80