Finding the Fourth Proportional to 1,665,436.80, 2,298,313.92 and 930,390.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665,436.80 : 2,298,313.92 = 930,390.72 : x
2. Step 2: Convert to fraction form
   1,665,436.80/2,298,313.92 = 930,390.72/x
3. Step 3: Cross multiply
   1,665,436.80x = 2,298,313.92 × 930,390.72
4. Step 4: Simplify right side
   1,665,436.80x = 2,138,329,942,814.82
5. Step 5: Solve for x
   x = 2,138,329,942,814.82/1,665,436.80
6. Step 6: Final answer
   x = 1,283,945.41