Finding the Fourth Proportional to 1,112,087.07, 1,667,803.61 and 472,385.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112,087.07 : 1,667,803.61 = 472,385.72 : x
2. Step 2: Convert to fraction form
   1,112,087.07/1,667,803.61 = 472,385.72/x
3. Step 3: Cross multiply
   1,112,087.07x = 1,667,803.61 × 472,385.72
4. Step 4: Simplify right side
   1,112,087.07x = 787,846,609,128.45
5. Step 5: Solve for x
   x = 787,846,609,128.45/1,112,087.07
6. Step 6: Final answer
   x = 708,439.68