Finding the Fourth Proportional to 1,018,111.80, 1,527,156.18 and 618,863.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018,111.80 : 1,527,156.18 = 618,863.16 : x
2. Step 2: Convert to fraction form
   1,018,111.80/1,527,156.18 = 618,863.16/x
3. Step 3: Cross multiply
   1,018,111.80x = 1,527,156.18 × 618,863.16
4. Step 4: Simplify right side
   1,018,111.80x = 945,100,699,368.33
5. Step 5: Solve for x
   x = 945,100,699,368.33/1,018,111.80
6. Step 6: Final answer
   x = 928,287.74