Finding the Fourth Proportional to 1,019,117.77, 1,528,636.72 and 345,199.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019,117.77 : 1,528,636.72 = 345,199.05 : x
2. Step 2: Convert to fraction form
   1,019,117.77/1,528,636.72 = 345,199.05/x
3. Step 3: Cross multiply
   1,019,117.77x = 1,528,636.72 × 345,199.05
4. Step 4: Simplify right side
   1,019,117.77x = 527,683,945,421.02
5. Step 5: Solve for x
   x = 527,683,945,421.02/1,019,117.77
6. Step 6: Final answer
   x = 517,785.05