Finding the Fourth Proportional to 2,111,973.78, 3,159,284.39 and 1,686,340.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111,973.78 : 3,159,284.39 = 1,686,340.95 : x
2. Step 2: Convert to fraction form
   2,111,973.78/3,159,284.39 = 1,686,340.95/x
3. Step 3: Cross multiply
   2,111,973.78x = 3,159,284.39 × 1,686,340.95
4. Step 4: Simplify right side
   2,111,973.78x = 5,327,630,631,121.07
5. Step 5: Solve for x
   x = 5,327,630,631,121.07/2,111,973.78
6. Step 6: Final answer
   x = 2,522,583.70