Finding the Fourth Proportional to 2,143,605.98, 2,958,099.62 and 1,213,293.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143,605.98 : 2,958,099.62 = 1,213,293.77 : x
2. Step 2: Convert to fraction form
   2,143,605.98/2,958,099.62 = 1,213,293.77/x
3. Step 3: Cross multiply
   2,143,605.98x = 2,958,099.62 × 1,213,293.77
4. Step 4: Simplify right side
   2,143,605.98x = 3,589,043,819,128.40
5. Step 5: Solve for x
   x = 3,589,043,819,128.40/2,143,605.98
6. Step 6: Final answer
   x = 1,674,302.02