Finding the Fourth Proportional to 1,491,462.72, 2,058,268.32 and 812,462.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,491,462.72 : 2,058,268.32 = 812,462.40 : x
2. Step 2: Convert to fraction form
   1,491,462.72/2,058,268.32 = 812,462.40/x
3. Step 3: Cross multiply
   1,491,462.72x = 2,058,268.32 × 812,462.40
4. Step 4: Simplify right side
   1,491,462.72x = 1,672,265,619,111.17
5. Step 5: Solve for x
   x = 1,672,265,619,111.17/1,491,462.72
6. Step 6: Final answer
   x = 1,121,225.22