Finding the Fourth Proportional to 897,486.93, 1,238,510.25 and 515,538.27

Step by Step Solution

1. Step 1: Write the proportion equation
   897,486.93 : 1,238,510.25 = 515,538.27 : x
2. Step 2: Convert to fraction form
   897,486.93/1,238,510.25 = 515,538.27/x
3. Step 3: Cross multiply
   897,486.93x = 1,238,510.25 × 515,538.27
4. Step 4: Simplify right side
   897,486.93x = 638,499,431,662.27
5. Step 5: Solve for x
   x = 638,499,431,662.27/897,486.93
6. Step 6: Final answer
   x = 711,430.34