Finding the Fourth Proportional to 2,105,587.84, 2,905,702.86 and 1,138,719.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,587.84 : 2,905,702.86 = 1,138,719.20 : x
2. Step 2: Convert to fraction form
   2,105,587.84/2,905,702.86 = 1,138,719.20/x
3. Step 3: Cross multiply
   2,105,587.84x = 2,905,702.86 × 1,138,719.20
4. Step 4: Simplify right side
   2,105,587.84x = 3,308,779,636,176.91
5. Step 5: Solve for x
   x = 3,308,779,636,176.91/2,105,587.84
6. Step 6: Final answer
   x = 1,571,427.98