Finding the Fourth Proportional to 1,201,900.21, 1,803,090.89 and 443,746.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,201,900.21 : 1,803,090.89 = 443,746.29 : x
2. Step 2: Convert to fraction form
   1,201,900.21/1,803,090.89 = 443,746.29/x
3. Step 3: Cross multiply
   1,201,900.21x = 1,803,090.89 × 443,746.29
4. Step 4: Simplify right side
   1,201,900.21x = 800,114,892,970.30
5. Step 5: Solve for x
   x = 800,114,892,970.30/1,201,900.21
6. Step 6: Final answer
   x = 665,708.26