Finding the Fourth Proportional to 1,191,978.71, 1,789,091.77 and 434,552.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191,978.71 : 1,789,091.77 = 434,552.26 : x
2. Step 2: Convert to fraction form
   1,191,978.71/1,789,091.77 = 434,552.26/x
3. Step 3: Cross multiply
   1,191,978.71x = 1,789,091.77 × 434,552.26
4. Step 4: Simplify right side
   1,191,978.71x = 777,453,863,055.44
5. Step 5: Solve for x
   x = 777,453,863,055.44/1,191,978.71
6. Step 6: Final answer
   x = 652,238.04