Finding the Fourth Proportional to 2,390,443.86, 3,298,812.60 and 1,317,355.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390,443.86 : 3,298,812.60 = 1,317,355.86 : x
2. Step 2: Convert to fraction form
   2,390,443.86/3,298,812.60 = 1,317,355.86/x
3. Step 3: Cross multiply
   2,390,443.86x = 3,298,812.60 × 1,317,355.86
4. Step 4: Simplify right side
   2,390,443.86x = 4,345,710,109,651.84
5. Step 5: Solve for x
   x = 4,345,710,109,651.84/2,390,443.86
6. Step 6: Final answer
   x = 1,817,951.13