Finding the Fourth Proportional to 1,231,401, 1,699,317.29 and 687,546.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,231,401 : 1,699,317.29 = 687,546.05 : x
2. Step 2: Convert to fraction form
   1,231,401/1,699,317.29 = 687,546.05/x
3. Step 3: Cross multiply
   1,231,401x = 1,699,317.29 × 687,546.05
4. Step 4: Simplify right side
   1,231,401x = 1,168,358,878,501.89
5. Step 5: Solve for x
   x = 1,168,358,878,501.89/1,231,401
6. Step 6: Final answer
   x = 948,804.56