Finding the Fourth Proportional to 1,176,128.72, 1,623,093.32 and 666,852.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,176,128.72 : 1,623,093.32 = 666,852.56 : x
2. Step 2: Convert to fraction form
   1,176,128.72/1,623,093.32 = 666,852.56/x
3. Step 3: Cross multiply
   1,176,128.72x = 1,623,093.32 × 666,852.56
4. Step 4: Simplify right side
   1,176,128.72x = 1,082,363,935,560.90
5. Step 5: Solve for x
   x = 1,082,363,935,560.90/1,176,128.72
6. Step 6: Final answer
   x = 920,276.77