Finding the Fourth Proportional to 1,019,118.77, 1,528,638.22 and 345,200.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019,118.77 : 1,528,638.22 = 345,200.05 : x
2. Step 2: Convert to fraction form
   1,019,118.77/1,528,638.22 = 345,200.05/x
3. Step 3: Cross multiply
   1,019,118.77x = 1,528,638.22 × 345,200.05
4. Step 4: Simplify right side
   1,019,118.77x = 527,685,989,975.91
5. Step 5: Solve for x
   x = 527,685,989,975.91/1,019,118.77
6. Step 6: Final answer
   x = 517,786.55