Finding the Fourth Proportional to 801,174, 1,105,620.12 and 443,478

Step by Step Solution

1. Step 1: Write the proportion equation
   801,174 : 1,105,620.12 = 443,478 : x
2. Step 2: Convert to fraction form
   801,174/1,105,620.12 = 443,478/x
3. Step 3: Cross multiply
   801,174x = 1,105,620.12 × 443,478
4. Step 4: Simplify right side
   801,174x = 490,318,199,577.36
5. Step 5: Solve for x
   x = 490,318,199,577.36/801,174
6. Step 6: Final answer
   x = 611,999.64