Finding the Fourth Proportional to 1,122,081.30, 1,683,288.05 and 412,053.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,122,081.30 : 1,683,288.05 = 412,053.98 : x
2. Step 2: Convert to fraction form
   1,122,081.30/1,683,288.05 = 412,053.98/x
3. Step 3: Cross multiply
   1,122,081.30x = 1,683,288.05 × 412,053.98
4. Step 4: Simplify right side
   1,122,081.30x = 693,605,538,428.67
5. Step 5: Solve for x
   x = 693,605,538,428.67/1,122,081.30
6. Step 6: Final answer
   x = 618,141.96