Finding the Fourth Proportional to 2,166,628.50, 2,989,910.51 and 1,199,738.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166,628.50 : 2,989,910.51 = 1,199,738.01 : x
2. Step 2: Convert to fraction form
   2,166,628.50/2,989,910.51 = 1,199,738.01/x
3. Step 3: Cross multiply
   2,166,628.50x = 2,989,910.51 × 1,199,738.01
4. Step 4: Simplify right side
   2,166,628.50x = 3,587,109,295,057.98
5. Step 5: Solve for x
   x = 3,587,109,295,057.98/2,166,628.50
6. Step 6: Final answer
   x = 1,655,618.07