Finding the Fourth Proportional to 2,138,385.48, 2,950,970.94 and 1,278,945.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,138,385.48 : 2,950,970.94 = 1,278,945.72 : x
2. Step 2: Convert to fraction form
   2,138,385.48/2,950,970.94 = 1,278,945.72/x
3. Step 3: Cross multiply
   2,138,385.48x = 2,950,970.94 × 1,278,945.72
4. Step 4: Simplify right side
   2,138,385.48x = 3,774,131,653,557.38
5. Step 5: Solve for x
   x = 3,774,131,653,557.38/2,138,385.48
6. Step 6: Final answer
   x = 1,764,944.48