Finding the Fourth Proportional to 1,290,632.51, 1,935,932.34 and 580,158.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,290,632.51 : 1,935,932.34 = 580,158.21 : x
2. Step 2: Convert to fraction form
   1,290,632.51/1,935,932.34 = 580,158.21/x
3. Step 3: Cross multiply
   1,290,632.51x = 1,935,932.34 × 580,158.21
4. Step 4: Simplify right side
   1,290,632.51x = 1,123,147,041,055.51
5. Step 5: Solve for x
   x = 1,123,147,041,055.51/1,290,632.51
6. Step 6: Final answer
   x = 870,229.94