Finding the Fourth Proportional to 999,706.72, 1,499,622.38 and 400,590.02

Step by Step Solution

1. Step 1: Write the proportion equation
   999,706.72 : 1,499,622.38 = 400,590.02 : x
2. Step 2: Convert to fraction form
   999,706.72/1,499,622.38 = 400,590.02/x
3. Step 3: Cross multiply
   999,706.72x = 1,499,622.38 × 400,590.02
4. Step 4: Simplify right side
   999,706.72x = 600,733,759,196.65
5. Step 5: Solve for x
   x = 600,733,759,196.65/999,706.72
6. Step 6: Final answer
   x = 600,909.99