Finding the Fourth Proportional to 1,230,432.10, 1,843,920.15 and 978,144.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,230,432.10 : 1,843,920.15 = 978,144.10 : x
2. Step 2: Convert to fraction form
   1,230,432.10/1,843,920.15 = 978,144.10/x
3. Step 3: Cross multiply
   1,230,432.10x = 1,843,920.15 × 978,144.10
4. Step 4: Simplify right side
   1,230,432.10x = 1,803,619,615,593.61
5. Step 5: Solve for x
   x = 1,803,619,615,593.61/1,230,432.10
6. Step 6: Final answer
   x = 1,465,842.46