Finding the Fourth Proportional to 1,426,273.59, 1,968,272.96 and 781,679.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426,273.59 : 1,968,272.96 = 781,679.91 : x
2. Step 2: Convert to fraction form
   1,426,273.59/1,968,272.96 = 781,679.91/x
3. Step 3: Cross multiply
   1,426,273.59x = 1,968,272.96 × 781,679.91
4. Step 4: Simplify right side
   1,426,273.59x = 1,538,559,426,319.83
5. Step 5: Solve for x
   x = 1,538,559,426,319.83/1,426,273.59
6. Step 6: Final answer
   x = 1,078,726.72