Finding the Fourth Proportional to 2,085,447.60, 3,128,225.76 and 665,501.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085,447.60 : 3,128,225.76 = 665,501.76 : x
2. Step 2: Convert to fraction form
   2,085,447.60/3,128,225.76 = 665,501.76/x
3. Step 3: Cross multiply
   2,085,447.60x = 3,128,225.76 × 665,501.76
4. Step 4: Simplify right side
   2,085,447.60x = 2,081,839,748,957.34
5. Step 5: Solve for x
   x = 2,081,839,748,957.34/2,085,447.60
6. Step 6: Final answer
   x = 998,269.99