Finding the Fourth Proportional to 780,131.60, 1,093,658.80 and 780,131.60

Step by Step Solution

1. Step 1: Write the proportion equation
   780,131.60 : 1,093,658.80 = 780,131.60 : x
2. Step 2: Convert to fraction form
   780,131.60/1,093,658.80 = 780,131.60/x
3. Step 3: Cross multiply
   780,131.60x = 1,093,658.80 × 780,131.60
4. Step 4: Simplify right side
   780,131.60x = 853,197,789,498.08
5. Step 5: Solve for x
   x = 853,197,789,498.08/780,131.60
6. Step 6: Final answer
   x = 1,093,658.80