Finding the Fourth Proportional to 1,978,834.16, 2,969,668.47 and 842,393.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978,834.16 : 2,969,668.47 = 842,393.12 : x
2. Step 2: Convert to fraction form
   1,978,834.16/2,969,668.47 = 842,393.12/x
3. Step 3: Cross multiply
   1,978,834.16x = 2,969,668.47 × 842,393.12
4. Step 4: Simplify right side
   1,978,834.16x = 2,501,628,287,808.93
5. Step 5: Solve for x
   x = 2,501,628,287,808.93/1,978,834.16
6. Step 6: Final answer
   x = 1,264,193.00