Finding the Fourth Proportional to 1,192,055.55, 1,645,013.25 and 648,186.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,192,055.55 : 1,645,013.25 = 648,186.72 : x
2. Step 2: Convert to fraction form
   1,192,055.55/1,645,013.25 = 648,186.72/x
3. Step 3: Cross multiply
   1,192,055.55x = 1,645,013.25 × 648,186.72
4. Step 4: Simplify right side
   1,192,055.55x = 1,066,275,742,874.04
5. Step 5: Solve for x
   x = 1,066,275,742,874.04/1,192,055.55
6. Step 6: Final answer
   x = 894,484.94