Finding the Fourth Proportional to 1,395,012.72, 2,092,538.52 and 397,740.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395,012.72 : 2,092,538.52 = 397,740.72 : x
2. Step 2: Convert to fraction form
   1,395,012.72/2,092,538.52 = 397,740.72/x
3. Step 3: Cross multiply
   1,395,012.72x = 2,092,538.52 × 397,740.72
4. Step 4: Simplify right side
   1,395,012.72x = 832,287,777,572.53
5. Step 5: Solve for x
   x = 832,287,777,572.53/1,395,012.72
6. Step 6: Final answer
   x = 596,616.62