Finding the Fourth Proportional to 1,556,456.06, 2,147,942.17 and 877,392.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,556,456.06 : 2,147,942.17 = 877,392.56 : x
2. Step 2: Convert to fraction form
   1,556,456.06/2,147,942.17 = 877,392.56/x
3. Step 3: Cross multiply
   1,556,456.06x = 2,147,942.17 × 877,392.56
4. Step 4: Simplify right side
   1,556,456.06x = 1,884,588,485,734.85
5. Step 5: Solve for x
   x = 1,884,588,485,734.85/1,556,456.06
6. Step 6: Final answer
   x = 1,210,820.23