Finding the Fourth Proportional to 745,869.05, 1,118,913.83 and 272,443.69

Step by Step Solution

1. Step 1: Write the proportion equation
   745,869.05 : 1,118,913.83 = 272,443.69 : x
2. Step 2: Convert to fraction form
   745,869.05/1,118,913.83 = 272,443.69/x
3. Step 3: Cross multiply
   745,869.05x = 1,118,913.83 × 272,443.69
4. Step 4: Simplify right side
   745,869.05x = 304,841,012,637.23
5. Step 5: Solve for x
   x = 304,841,012,637.23/745,869.05
6. Step 6: Final answer
   x = 408,705.81