Finding the Fourth Proportional to 1,560,645.31, 2,340,967.98 and 438,714.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,560,645.31 : 2,340,967.98 = 438,714.31 : x
2. Step 2: Convert to fraction form
   1,560,645.31/2,340,967.98 = 438,714.31/x
3. Step 3: Cross multiply
   1,560,645.31x = 2,340,967.98 × 438,714.31
4. Step 4: Simplify right side
   1,560,645.31x = 1,027,016,152,077.79
5. Step 5: Solve for x
   x = 1,027,016,152,077.79/1,560,645.31
6. Step 6: Final answer
   x = 658,071.47