Finding the Fourth Proportional to 1,061,066.79, 1,461,481.89 and 815,581.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061,066.79 : 1,461,481.89 = 815,581.51 : x
2. Step 2: Convert to fraction form
   1,061,066.79/1,461,481.89 = 815,581.51/x
3. Step 3: Cross multiply
   1,061,066.79x = 1,461,481.89 × 815,581.51
4. Step 4: Simplify right side
   1,061,066.79x = 1,191,957,599,971.72
5. Step 5: Solve for x
   x = 1,191,957,599,971.72/1,061,066.79
6. Step 6: Final answer
   x = 1,123,357.75