Finding the Fourth Proportional to 1,384,755.84, 1,911,270.72 and 900,478.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384,755.84 : 1,911,270.72 = 900,478.08 : x
2. Step 2: Convert to fraction form
   1,384,755.84/1,911,270.72 = 900,478.08/x
3. Step 3: Cross multiply
   1,384,755.84x = 1,911,270.72 × 900,478.08
4. Step 4: Simplify right side
   1,384,755.84x = 1,721,057,388,305.82
5. Step 5: Solve for x
   x = 1,721,057,388,305.82/1,384,755.84
6. Step 6: Final answer
   x = 1,242,859.82