Finding the Fourth Proportional to 1,200,279.98, 1,656,333.42 and 684,145.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,279.98 : 1,656,333.42 = 684,145.82 : x
2. Step 2: Convert to fraction form
   1,200,279.98/1,656,333.42 = 684,145.82/x
3. Step 3: Cross multiply
   1,200,279.98x = 1,656,333.42 × 684,145.82
4. Step 4: Simplify right side
   1,200,279.98x = 1,133,173,585,819.30
5. Step 5: Solve for x
   x = 1,133,173,585,819.30/1,200,279.98
6. Step 6: Final answer
   x = 944,091.05