Finding the Fourth Proportional to 1,105,019.21, 1,657,364.76 and 306,217.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105,019.21 : 1,657,364.76 = 306,217.46 : x
2. Step 2: Convert to fraction form
   1,105,019.21/1,657,364.76 = 306,217.46/x
3. Step 3: Cross multiply
   1,105,019.21x = 1,657,364.76 × 306,217.46
4. Step 4: Simplify right side
   1,105,019.21x = 507,514,018,813.89
5. Step 5: Solve for x
   x = 507,514,018,813.89/1,105,019.21
6. Step 6: Final answer
   x = 459,280.72