Finding the Fourth Proportional to 897,901.47, 1,239,111.27 and 490,006.53

Step by Step Solution

1. Step 1: Write the proportion equation
   897,901.47 : 1,239,111.27 = 490,006.53 : x
2. Step 2: Convert to fraction form
   897,901.47/1,239,111.27 = 490,006.53/x
3. Step 3: Cross multiply
   897,901.47x = 1,239,111.27 × 490,006.53
4. Step 4: Simplify right side
   897,901.47x = 607,172,613,696.59
5. Step 5: Solve for x
   x = 607,172,613,696.59/897,901.47
6. Step 6: Final answer
   x = 676,212.96