Finding the Fourth Proportional to 1,071,978.09, 1,479,263.49 and 588,540.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071,978.09 : 1,479,263.49 = 588,540.54 : x
2. Step 2: Convert to fraction form
   1,071,978.09/1,479,263.49 = 588,540.54/x
3. Step 3: Cross multiply
   1,071,978.09x = 1,479,263.49 × 588,540.54
4. Step 4: Simplify right side
   1,071,978.09x = 870,606,533,206.89
5. Step 5: Solve for x
   x = 870,606,533,206.89/1,071,978.09
6. Step 6: Final answer
   x = 812,149.56