Finding the Fourth Proportional to 1,113,517.59, 1,670,275.71 and 403,544.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,113,517.59 : 1,670,275.71 = 403,544.49 : x
2. Step 2: Convert to fraction form
   1,113,517.59/1,670,275.71 = 403,544.49/x
3. Step 3: Cross multiply
   1,113,517.59x = 1,670,275.71 × 403,544.49
4. Step 4: Simplify right side
   1,113,517.59x = 674,030,559,551.34
5. Step 5: Solve for x
   x = 674,030,559,551.34/1,113,517.59
6. Step 6: Final answer
   x = 605,316.49