Finding the Fourth Proportional to 1,912,680.14, 2,639,498.33 and 1,053,238.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,912,680.14 : 2,639,498.33 = 1,053,238.28 : x
2. Step 2: Convert to fraction form
   1,912,680.14/2,639,498.33 = 1,053,238.28/x
3. Step 3: Cross multiply
   1,912,680.14x = 2,639,498.33 × 1,053,238.28
4. Step 4: Simplify right side
   1,912,680.14x = 2,780,020,662,688.39
5. Step 5: Solve for x
   x = 2,780,020,662,688.39/1,912,680.14
6. Step 6: Final answer
   x = 1,453,468.68