Finding the Fourth Proportional to 2,157,769.10, 2,977,706.72 and 1,190,899.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,157,769.10 : 2,977,706.72 = 1,190,899.39 : x
2. Step 2: Convert to fraction form
   2,157,769.10/2,977,706.72 = 1,190,899.39/x
3. Step 3: Cross multiply
   2,157,769.10x = 2,977,706.72 × 1,190,899.39
4. Step 4: Simplify right side
   2,157,769.10x = 3,546,149,111,979.88
5. Step 5: Solve for x
   x = 3,546,149,111,979.88/2,157,769.10
6. Step 6: Final answer
   x = 1,643,433.08