Finding the Fourth Proportional to 2,179,874.88, 3,008,156.64 and 1,212,978.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179,874.88 : 3,008,156.64 = 1,212,978.24 : x
2. Step 2: Convert to fraction form
   2,179,874.88/3,008,156.64 = 1,212,978.24/x
3. Step 3: Cross multiply
   2,179,874.88x = 3,008,156.64 × 1,212,978.24
4. Step 4: Simplify right side
   2,179,874.88x = 3,648,828,546,831.51
5. Step 5: Solve for x
   x = 3,648,828,546,831.51/2,179,874.88
6. Step 6: Final answer
   x = 1,673,870.63