Finding the Fourth Proportional to 853,001.50, 1,278,870.23 and 403,196.76

Step by Step Solution

1. Step 1: Write the proportion equation
   853,001.50 : 1,278,870.23 = 403,196.76 : x
2. Step 2: Convert to fraction form
   853,001.50/1,278,870.23 = 403,196.76/x
3. Step 3: Cross multiply
   853,001.50x = 1,278,870.23 × 403,196.76
4. Step 4: Simplify right side
   853,001.50x = 515,636,338,368.25
5. Step 5: Solve for x
   x = 515,636,338,368.25/853,001.50
6. Step 6: Final answer
   x = 604,496.41