Finding the Fourth Proportional to 1,978,060, 2,729,722.80 and 1,072,642.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978,060 : 2,729,722.80 = 1,072,642.72 : x
2. Step 2: Convert to fraction form
   1,978,060/2,729,722.80 = 1,072,642.72/x
3. Step 3: Cross multiply
   1,978,060x = 2,729,722.80 × 1,072,642.72
4. Step 4: Simplify right side
   1,978,060x = 2,928,017,289,038.02
5. Step 5: Solve for x
   x = 2,928,017,289,038.02/1,978,060
6. Step 6: Final answer
   x = 1,480,246.95