Finding the Fourth Proportional to 1,227,580.30, 1,838,260.05 and 978,748.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227,580.30 : 1,838,260.05 = 978,748.30 : x
2. Step 2: Convert to fraction form
   1,227,580.30/1,838,260.05 = 978,748.30/x
3. Step 3: Cross multiply
   1,227,580.30x = 1,838,260.05 × 978,748.30
4. Step 4: Simplify right side
   1,227,580.30x = 1,799,193,898,895.42
5. Step 5: Solve for x
   x = 1,799,193,898,895.42/1,227,580.30
6. Step 6: Final answer
   x = 1,465,642.53