Finding the Fourth Proportional to 2,290,667.99, 3,161,161.22 and 1,258,219.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290,667.99 : 3,161,161.22 = 1,258,219.31 : x
2. Step 2: Convert to fraction form
   2,290,667.99/3,161,161.22 = 1,258,219.31/x
3. Step 3: Cross multiply
   2,290,667.99x = 3,161,161.22 × 1,258,219.31
4. Step 4: Simplify right side
   2,290,667.99x = 3,977,434,066,930.26
5. Step 5: Solve for x
   x = 3,977,434,066,930.26/2,290,667.99
6. Step 6: Final answer
   x = 1,736,364.28