Finding the Fourth Proportional to 2,166,606.99, 2,989,880.89 and 1,199,716.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166,606.99 : 2,989,880.89 = 1,199,716.52 : x
2. Step 2: Convert to fraction form
   2,166,606.99/2,989,880.89 = 1,199,716.52/x
3. Step 3: Cross multiply
   2,166,606.99x = 2,989,880.89 × 1,199,716.52
4. Step 4: Simplify right side
   2,166,606.99x = 3,587,009,509,316.81
5. Step 5: Solve for x
   x = 3,587,009,509,316.81/2,166,606.99
6. Step 6: Final answer
   x = 1,655,588.45