Finding the Fourth Proportional to 2,945,160.60, 4,417,248.83 and 815,460

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945,160.60 : 4,417,248.83 = 815,460 : x
2. Step 2: Convert to fraction form
   2,945,160.60/4,417,248.83 = 815,460/x
3. Step 3: Cross multiply
   2,945,160.60x = 4,417,248.83 × 815,460
4. Step 4: Simplify right side
   2,945,160.60x = 3,602,089,730,911.80
5. Step 5: Solve for x
   x = 3,602,089,730,911.80/2,945,160.60
6. Step 6: Final answer
   x = 1,223,053.76