Finding the Fourth Proportional to 1,218,340.30, 1,820,105.96 and 788,373.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,218,340.30 : 1,820,105.96 = 788,373.36 : x
2. Step 2: Convert to fraction form
   1,218,340.30/1,820,105.96 = 788,373.36/x
3. Step 3: Cross multiply
   1,218,340.30x = 1,820,105.96 × 788,373.36
4. Step 4: Simplify right side
   1,218,340.30x = 1,434,923,057,081.16
5. Step 5: Solve for x
   x = 1,434,923,057,081.16/1,218,340.30
6. Step 6: Final answer
   x = 1,177,768.69