Finding the Fourth Proportional to 1,551,636.17, 2,141,005.57 and 863,290.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,551,636.17 : 2,141,005.57 = 863,290.34 : x
2. Step 2: Convert to fraction form
   1,551,636.17/2,141,005.57 = 863,290.34/x
3. Step 3: Cross multiply
   1,551,636.17x = 2,141,005.57 × 863,290.34
4. Step 4: Simplify right side
   1,551,636.17x = 1,848,309,421,632.71
5. Step 5: Solve for x
   x = 1,848,309,421,632.71/1,551,636.17
6. Step 6: Final answer
   x = 1,191,200.27