Finding the Fourth Proportional to 1,623,411.42, 2,241,208.71 and 978,994.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,623,411.42 : 2,241,208.71 = 978,994.86 : x
2. Step 2: Convert to fraction form
   1,623,411.42/2,241,208.71 = 978,994.86/x
3. Step 3: Cross multiply
   1,623,411.42x = 2,241,208.71 × 978,994.86
4. Step 4: Simplify right side
   1,623,411.42x = 2,194,131,807,277.23
5. Step 5: Solve for x
   x = 2,194,131,807,277.23/1,623,411.42
6. Step 6: Final answer
   x = 1,351,556.22