Finding the Fourth Proportional to 1,216,111.83, 1,678,182.00 and 664,817.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216,111.83 : 1,678,182.00 = 664,817.04 : x
2. Step 2: Convert to fraction form
   1,216,111.83/1,678,182.00 = 664,817.04/x
3. Step 3: Cross multiply
   1,216,111.83x = 1,678,182.00 × 664,817.04
4. Step 4: Simplify right side
   1,216,111.83x = 1,115,683,996,032.83
5. Step 5: Solve for x
   x = 1,115,683,996,032.83/1,216,111.83
6. Step 6: Final answer
   x = 917,418.92