Finding the Fourth Proportional to 2,390,490, 3,298,876.20 and 1,317,402

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390,490 : 3,298,876.20 = 1,317,402 : x
2. Step 2: Convert to fraction form
   2,390,490/3,298,876.20 = 1,317,402/x
3. Step 3: Cross multiply
   2,390,490x = 3,298,876.20 × 1,317,402
4. Step 4: Simplify right side
   2,390,490x = 4,345,946,103,632.40
5. Step 5: Solve for x
   x = 4,345,946,103,632.40/2,390,490
6. Step 6: Final answer
   x = 1,818,014.76