Finding the Fourth Proportional to 1,551,633.63, 2,141,002.09 and 863,287.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,551,633.63 : 2,141,002.09 = 863,287.80 : x
2. Step 2: Convert to fraction form
   1,551,633.63/2,141,002.09 = 863,287.80/x
3. Step 3: Cross multiply
   1,551,633.63x = 2,141,002.09 × 863,287.80
4. Step 4: Simplify right side
   1,551,633.63x = 1,848,300,983,143.42
5. Step 5: Solve for x
   x = 1,848,300,983,143.42/1,551,633.63
6. Step 6: Final answer
   x = 1,191,196.78