Finding the Fourth Proportional to 1,407,457.29, 1,942,498.59 and 891,258.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407,457.29 : 1,942,498.59 = 891,258.31 : x
2. Step 2: Convert to fraction form
   1,407,457.29/1,942,498.59 = 891,258.31/x
3. Step 3: Cross multiply
   1,407,457.29x = 1,942,498.59 × 891,258.31
4. Step 4: Simplify right side
   1,407,457.29x = 1,731,268,010,500.78
5. Step 5: Solve for x
   x = 1,731,268,010,500.78/1,407,457.29
6. Step 6: Final answer
   x = 1,230,067.88