Finding the Fourth Proportional to 1,380,133.83, 2,070,081.78 and 840,250.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380,133.83 : 2,070,081.78 = 840,250.29 : x
2. Step 2: Convert to fraction form
   1,380,133.83/2,070,081.78 = 840,250.29/x
3. Step 3: Cross multiply
   1,380,133.83x = 2,070,081.78 × 840,250.29
4. Step 4: Simplify right side
   1,380,133.83x = 1,739,386,805,618.31
5. Step 5: Solve for x
   x = 1,739,386,805,618.31/1,380,133.83
6. Step 6: Final answer
   x = 1,260,303.00