Finding the Fourth Proportional to 1,665,636.98, 2,298,578.55 and 901,689.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665,636.98 : 2,298,578.55 = 901,689.98 : x
2. Step 2: Convert to fraction form
   1,665,636.98/2,298,578.55 = 901,689.98/x
3. Step 3: Cross multiply
   1,665,636.98x = 2,298,578.55 × 901,689.98
4. Step 4: Simplify right side
   1,665,636.98x = 2,072,605,246,777.93
5. Step 5: Solve for x
   x = 2,072,605,246,777.93/1,665,636.98
6. Step 6: Final answer
   x = 1,244,331.91