Finding the Fourth Proportional to 2,728,299.89, 4,091,323.77 and 931,328.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,728,299.89 : 4,091,323.77 = 931,328.25 : x
2. Step 2: Convert to fraction form
   2,728,299.89/4,091,323.77 = 931,328.25/x
3. Step 3: Cross multiply
   2,728,299.89x = 4,091,323.77 × 931,328.25
4. Step 4: Simplify right side
   2,728,299.89x = 3,810,365,406,897.50
5. Step 5: Solve for x
   x = 3,810,365,406,897.50/2,728,299.89
6. Step 6: Final answer
   x = 1,396,607.99