Finding the Fourth Proportional to 1,088,380.10, 1,632,583.82 and 289,656.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088,380.10 : 1,632,583.82 = 289,656.72 : x
2. Step 2: Convert to fraction form
   1,088,380.10/1,632,583.82 = 289,656.72/x
3. Step 3: Cross multiply
   1,088,380.10x = 1,632,583.82 × 289,656.72
4. Step 4: Simplify right side
   1,088,380.10x = 472,888,874,426.27
5. Step 5: Solve for x
   x = 472,888,874,426.27/1,088,380.10
6. Step 6: Final answer
   x = 434,488.72