Finding the Fourth Proportional to 1,021,002.48, 1,405,944.72 and 998,345.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,021,002.48 : 1,405,944.72 = 998,345.97 : x
2. Step 2: Convert to fraction form
   1,021,002.48/1,405,944.72 = 998,345.97/x
3. Step 3: Cross multiply
   1,021,002.48x = 1,405,944.72 × 998,345.97
4. Step 4: Simplify right side
   1,021,002.48x = 1,403,619,245,254.78
5. Step 5: Solve for x
   x = 1,403,619,245,254.78/1,021,002.48
6. Step 6: Final answer
   x = 1,374,746.17