Finding the Fourth Proportional to 1,602,560.72, 2,405,017.20 and 1,290,782.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,602,560.72 : 2,405,017.20 = 1,290,782.00 : x
2. Step 2: Convert to fraction form
   1,602,560.72/2,405,017.20 = 1,290,782.00/x
3. Step 3: Cross multiply
   1,602,560.72x = 2,405,017.20 × 1,290,782.00
4. Step 4: Simplify right side
   1,602,560.72x = 3,104,352,899,425.31
5. Step 5: Solve for x
   x = 3,104,352,899,425.31/1,602,560.72
6. Step 6: Final answer
   x = 1,937,120.30