Finding the Fourth Proportional to 2,828,086.95, 4,242,139.23 and 698,171.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,828,086.95 : 4,242,139.23 = 698,171.30 : x
2. Step 2: Convert to fraction form
   2,828,086.95/4,242,139.23 = 698,171.30/x
3. Step 3: Cross multiply
   2,828,086.95x = 4,242,139.23 × 698,171.30
4. Step 4: Simplify right side
   2,828,086.95x = 2,961,739,839,779.40
5. Step 5: Solve for x
   x = 2,961,739,839,779.40/2,828,086.95
6. Step 6: Final answer
   x = 1,047,259.12