Finding the Fourth Proportional to 1,139,253.48, 1,709,139.42 and 606,493.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,253.48 : 1,709,139.42 = 606,493.80 : x
2. Step 2: Convert to fraction form
   1,139,253.48/1,709,139.42 = 606,493.80/x
3. Step 3: Cross multiply
   1,139,253.48x = 1,709,139.42 × 606,493.80
4. Step 4: Simplify right side
   1,139,253.48x = 1,036,582,461,565.60
5. Step 5: Solve for x
   x = 1,036,582,461,565.60/1,139,253.48
6. Step 6: Final answer
   x = 909,878.69