Finding the Fourth Proportional to 808,111.89, 1,115,189.64 and 445,534.29

Step by Step Solution

1. Step 1: Write the proportion equation
   808,111.89 : 1,115,189.64 = 445,534.29 : x
2. Step 2: Convert to fraction form
   808,111.89/1,115,189.64 = 445,534.29/x
3. Step 3: Cross multiply
   808,111.89x = 1,115,189.64 × 445,534.29
4. Step 4: Simplify right side
   808,111.89x = 496,855,224,472.76
5. Step 5: Solve for x
   x = 496,855,224,472.76/808,111.89
6. Step 6: Final answer
   x = 614,834.69