Finding the Fourth Proportional to 2,128,428.56, 2,937,293.69 and 1,161,620.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128,428.56 : 2,937,293.69 = 1,161,620.87 : x
2. Step 2: Convert to fraction form
   2,128,428.56/2,937,293.69 = 1,161,620.87/x
3. Step 3: Cross multiply
   2,128,428.56x = 2,937,293.69 × 1,161,620.87
4. Step 4: Simplify right side
   2,128,428.56x = 3,412,021,631,128.74
5. Step 5: Solve for x
   x = 3,412,021,631,128.74/2,128,428.56
6. Step 6: Final answer
   x = 1,603,070.78