Finding the Fourth Proportional to 2,085,501.56, 3,128,751.72 and 870,402.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085,501.56 : 3,128,751.72 = 870,402.51 : x
2. Step 2: Convert to fraction form
   2,085,501.56/3,128,751.72 = 870,402.51/x
3. Step 3: Cross multiply
   2,085,501.56x = 3,128,751.72 × 870,402.51
4. Step 4: Simplify right side
   2,085,501.56x = 2,723,273,350,254.82
5. Step 5: Solve for x
   x = 2,723,273,350,254.82/2,085,501.56
6. Step 6: Final answer
   x = 1,305,812.19