Finding the Fourth Proportional to 772,300.82, 1,158,644.18 and 545,040.17

Step by Step Solution

1. Step 1: Write the proportion equation
   772,300.82 : 1,158,644.18 = 545,040.17 : x
2. Step 2: Convert to fraction form
   772,300.82/1,158,644.18 = 545,040.17/x
3. Step 3: Cross multiply
   772,300.82x = 1,158,644.18 × 545,040.17
4. Step 4: Simplify right side
   772,300.82x = 631,507,627,268.38
5. Step 5: Solve for x
   x = 631,507,627,268.38/772,300.82
6. Step 6: Final answer
   x = 817,696.44